Question

найдите неизвестный член пропорции 1) x:36=7:35; 2) 36:27=3,75:x; 3)18:4=x:12
Помогите срочно

Answer 1

1) $\frac{x}{36} = \frac{7}{35}$

x*35 = 36*7

x*35 = 252

x = 252:35

x = 7,2

2) $\frac{36}{27} = \frac{3,75}{x}$

x*36 = 27*3,75

x*36 = 101,25

x = 2,8125

3) $\frac{18}{4} = \frac{x}{12}$

x*4 = 18*12

x*4 = 216

x = 216:4

x = 54