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**Table of Content**

Proportion calculator solves two ratios to determine the value of the missing variable x. Compare two fractions with an equivalent sign and get complete solution in one click.

**“Proportion is said to be a mathematical comparison between two ratios (fractions)”**

**Symbol:** “\(::\)” or “\(=\)”

There are two kinds that includes:

**In this type, increase/decrease in one quantity causes an increase/decrease in the second quantity.**

**Mathematically:**

a ∝ b

or, a/b = k

Where, k = A positive integer and “a” and “b” are directly proportional relationship to each other.

**In this case, if one quantity increases, the other decreases. Similarly if the first quantity decreases, the second one increases.**

**Mathematically:**

a ∝ 1/b

Where, the relation between “a” and “b” are inverse to each other.

If you want to know the proportion with 2 variables from the proportion equation, then

- Simply put the equal sign between them
- Find the missing value by cross multiplication

The equation is given as \(\dfrac {8}{x} = \dfrac {6}{4}\), solve for the unknown \(x\)?

**By Cross Multiplication:**

Try the simple proportions calculator to solve each proportion problems with fractions. As the equation is given as follows:

\(\frac {8}{x} = \frac {6}{4}\)

The cross-multiplication method is a common technique for solving proportions. So, by this we get:

\(6x = 8 \times 4\)

\(x = 8 \times \frac {4}{6}\)

\(x = \frac {32}{6}\)

\(x = 5.33\)

**The Equation is Equal if,**

8 / 6 = 1.33

So, it is true that,

x / 4 = 1.33

x = 1.33 × 4

x = 5.33

From the source of Wikipedia : Understanding of direct & inverse

From the site of mathisfun : Definition.

Other Languages: Kalkulator Proporcji, Kalkulator Proporsi, Proportions Rechner, 比例計算, Calculo De Proporção, Calculadora De Proporciones, Calcolo Proporzioni, Калькулятор Пропорций, Mittasuhteet Laskin.