Short Answer

Use equivalent ratios to solve the proportion.
$\frac{2}{7} = \frac{x}{21}$

The solution is x = 6.

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Step by Step Solution

TABLE OF CONTENTS :

TABLE OF CONTENTS

Step-1 – Given

The given proportion is $\frac{2}{7} = \frac{x}{21}$ .

Step-2 – To determine

We have to solve the proportion by using equivalent ratios.

Step-3 – Calculation

Solve the given equation.

$\begin{matrix} \frac{2}{7} = \frac{x}{21} \\ \frac{2}{7 \times 3} = \frac{x}{21} [compare denominators] \\ \frac{2 \times 3}{21} = \frac{x}{21} [find x] \\ x = 2 \times 3 \\ x = 6 \end{matrix}$

So, the solution is x = 6.

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Pre-algebra

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Short Answer

Use equivalent ratios to solve the proportion.
$\frac{2}{7} = \frac{x}{21}$

Step by Step Solution

Step-1 – Given

Step-2 – To determine

Step-3 – Calculation

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Use equivalent ratios to solve the proportion.
$\frac{2}{7} = \frac{x}{21}$