Question

find the number that makes the ratio equivalent to 1:3.
9:□

Explanation:

Step1: Let the unknown number be \( x \). The ratio \( 9:x \) should be equivalent to \( 1:3 \). By the property of equivalent ratios, we have \( \frac{1}{3}=\frac{9}{x} \).

Step2: Cross - multiply to solve for \( x \). So, \( 1\times x = 3\times9 \), which simplifies to \( x = 27 \).

Answer:

27