Solution
For this case we can use a proportional rule to solve for the value of y and we got:
[tex]\frac{y}{2.4}=\frac{7.2}{4.8}[/tex]And solving for y we got:
[tex]y=2.4\cdot\frac{7.2}{4.8}=\frac{7.2}{2}=3.6[/tex]And for the other value we can do this:
[tex]\frac{2.8}{2.4}=\frac{x}{4.8}[/tex]Solving for x we got:
[tex]x=4.8\cdot\frac{2.8}{2.4}=2\cdot2.8=5.6[/tex]