Question

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

Answer 1

`\begin{gathered} (13)/(11)=(4)/(u) \\ u(13)/(11)=u(4)/(u) \\ u(13)/(11)=4 \\ u(13)/(11)\cdot(11)/(13)=4(11)/(13) \\ u=(44)/(13) \end{gathered}`