Calculate proportion
÷ Online calculator proportion
Enter three values to verify a proportion and calculate the unknown term.
Enter three values to verify a proportion and calculate the unknown term.
Enter the values and calculate your proportion using the formula a:b=c:d, for example 4:3=100:X ⇒ X=(3×100)/4.
In mathematics, a proportion is the equality between two ratios. In other words, it is a relation that establishes an equivalence between four quantities, called terms, which are proportional to each other.
The product of the means is equal to the product of the extremes: a × d = b × c
20:10 = 40:20 is a proportion because both ratios are equal to 2.
If you know three terms, you can find the fourth using the formula: d = (b × c) / a
When the two ratios have the same value.
They are used to compare quantities and solve mathematical and real-world problems.
By multiplying means and extremes and comparing the results.
A proportion is an equality between two ratios. It is verified when a × d = b × c.
Proportions are used in mathematics, economics, cooking, and physics to solve problems of equivalence between quantities.