Answer :
Step 1:
Let us write out the proportion question,
[tex]\frac{5}{x}=\frac{10}{3}[/tex]Step 2:
Cross multiply,
[tex]\begin{gathered} 5\times3=10\times x \\ 15=10x \end{gathered}[/tex]Step 3:
Divide both sides by 10
[tex]\begin{gathered} \frac{15}{10}=\frac{10x}{10} \\ 1.5=x \\ \text{Hence,} \\ x=1.5 \end{gathered}[/tex]Hence, x= 1.5.