Question

solve for u in the proportion.
$\frac{5.1}{4}=\frac{u}{12}$
$u = square$

Explanation:

Step1: Cross - multiply

$4u=5.1\times12$

Step2: Calculate the right - hand side

$5.1\times12 = 61.2$, so $4u = 61.2$

Step3: Solve for $u$

$u=\frac{61.2}{4}=15.3$

Answer:

$15.3$