[tex] \frac{5}{4} = \frac{3}{x} \\ \\ x = \frac{12}{5} = 2.4[/tex]
[tex] \frac{3}{2.25} = \frac{x}{3.75} \\ \\ x = \frac{3 \times 3.75}{2.25} = \frac{11.25}{2.25} = 5[/tex]
