Definition of Rule of Three

The math at the command of solving everyday problems.- Many people, who clearly do not like mathematics tend to complain about the complexity of some operations that it proposes and that is why they consider them alien to their lives and more typical of complex scientific fields. However, none of this is the case in reality and mathematics is very present in our daily lives, even in those of those who use it the most. repel, because on many occasions it is necessary to resort to them, to numbers, to solve, as we have already said, questions that ask our everyday life.

In as much and with regard to this that we recently commented, the rule of three, which is a method Within mathematics, which is taught at the most basic level of mathematics, it turns out to be widely used at instances of our daily lives to solve some accounts, some problems that involve figures...

The simplest mathematical method when solving problems of proportionality

At the behest of mathematics then, the Rule of Three is that method that allows us to solve proportionality problems between three or more known values ​​(comparing them) and one unknown. This form establishes a relationship of proportionality between those values ​​involved.

The Rule of Three is one of the methods taught in the teaching basic initial as a consequence of precisely the normality in its use.

The Rule of Three in addition to being a A very simple instrument to use, it will be extremely useful when it comes to having to effectively solve some daily problems that require your app to bring them to fruition.

The aforementioned calculation method consists of a very simple operation, which, as we said above, will allow us to discover the fourth term of a proportion and of which we only know three. For example, through the Rule of Three we will be able to know how much two kilos of tomatoes cost from observing the price for one kilo of them that is displayed in the poster of the market in which we want to buy them.

Likewise, the Rule of Three will allow us to operate with elements as different as hours, kilometers, kilos, number of workers, among others.

Types of rule of threes and ways to solve the unknowns

Although the Simple Rule of Three is the most widespread and used Rule of Three, there are two others, the Rule of Three Inverse and the Compound Rule of Three, which are also simple to use and allow problem solving everyday.

An example will be the best way to understand the Simple Rule of Three. Suppose that if I need 3 meters of foam to fill four pillows, how much more foam will I need to fill six more pillows? This is how the Simple Three rule allows us to solve this issue... 4 cushions are 3 meters of foam rubber, like six cushions are x meters of foam rubber, To obtain the number we must multiply the six cushions by three meters and divide the result by two, therefore, I will need 9 meters of rubber foam.

Meanwhile, in the case of the Inverse Rule of Three, the opposite occurs than in the case described above, that is, in the situation of the Simple Rule of Three, if the third term grows, the unknown also grows, although there may be some question in everyday life that although X increases Y decreases, then, here the rule of three will apply reverse. And on the side of the compound Rule of Three, it will be used when the problem posed involves more than three known quantities.

On Internet they also calculate it for you

As we already know, the internet has reached a point of development and dissemination such that it is impossible not to find in the network of networks almost all the questions we ask ourselves, even the most unusual...

So, how could there be a lack of spaces on the internet that allow us to consult online, and with immediate results, the problems involving the rule of three. As it is one of the most useful and recurring calculations in daily life, as we already pointed out in repeated opportunities, there are websites that offer users to instantly solve these problems. They will only have to place the known values ​​and from these the unknown will be calculated, just like the We do it on paper but in an automatic way in which a machine is in charge of making the effort of calculate.