Answer
$y \approx 3.6$
Work Step by Step
Before we solve the proportion, let's rewrite it in a more conventional form as equal ratios:
$\dfrac{5}{7} = \dfrac{y}{5}$
To solve a proportion, we use the cross products property, multiplying the numerator of one ratio with the denominator of the other ratio, and vice versa:
$5(5) = 7y$
Multiply on the left side of the equation:
$25 = 7y$
Divide each side of the equation by $7$ to solve for $y$:
$y \approx 3.6$
