Question

13 over 11 equals 4 over uWhat is the proportion of u?

Answer 1

$\begin{gathered} \frac{13}{11}=\frac{4}{u} \\ u\frac{13}{11}=u\frac{4}{u} \\ u\frac{13}{11}=4 \\ u\frac{13}{11}\cdot\frac{11}{13}=4\frac{11}{13} \\ u=\frac{44}{13} \end{gathered}$