Question

Use algebra to solve the proportion.

$\frac{3}{10}=\frac{x}{100}$

Short answer

The solution is $x=30$.

Step-by-step solution

Step-1 – Given

The given proportion is$\frac{3}{10}=\frac{x}{100}$

Step-2 – To determine

We have to solve the proportion by using algebra.

Step-3 – Calculation 

Solve the given proportion.

$\begin{array}{c}\frac{3}{10}=\frac{x}{100}\\ \frac{3}{10}\cdot 100=\frac{x}{100}\cdot 100\left[\text{multiplyeachsideby100}\right]\\ \frac{300}{10}=x\left[\text{simplify}\right]\\ x=30\left[\text{divide}\right]\end{array}$

So, the solution is $x=30$.