Question

Determine o valor de x na proporção
X : 2,5 = 3/4 : 0,25

Obrigado a quem me responder :)
Façam a resolução fazendo favor

Answer 1

$\frac{x}{2,5}=\frac{\frac{3}{4}}{0,25}\\ \\ \frac{x}{\frac{5}{2}}=\frac{\frac{3}{4}}{\frac{1}{4}}\\ \\ \frac{2x}{5}=3\\ \\ 2x=15\\ \\ \boxed{x=\frac{15}{2}}$

Answer 2

$\dfrac{x}{2,5}=\dfrac{\frac{3}{4}}{0,25}$

$2,5=\dfrac{25}{10}=\dfrac{5}{2}$

$0,25=\dfrac{25}{100}=\dfrac{1}{4}$

$\dfrac{x}{\dfrac{5}{2}}=\dfrac{\dfrac{3}{4}}{\dfrac{1}{4}}$

$\dfrac{2x}{5}=3$

$2x=15$

$x=7,5$