Question

X:8/9=3:4 x:2,8=5:7 12:7=9:х 6,5:5,2=x:8 4,5:3,6=x:4 15:4=х:1.1/3

Answer 1

Решение пропорций во вложении

Answer 2

To solve these proportional equations, we can use the property of equal ratios. We'll go through each equation one by one:

1. X:8/9 = 3:4 Cross-multiplying, we get: 4X = (8/9) * 3 4X = 24/9 X = (24/9) / 4 X = 2/3

2. x:2.8 = 5:7 Cross-multiplying, we get: 7x = 2.8 * 5 7x = 14 x = 14/7 x = 2

3. 12:7 = 9:x Cross-multiplying, we get: 12x = 7 * 9 12x = 63 x = 63/12 x = 5.25

4. 6.5:5.2 = x:8 Cross-multiplying, we get: 5.2x = 6.5 * 8 5.2x = 52 x = 52/5.2 x = 10

5. 4.5:3.6 = x:4 Cross-multiplying, we get: 3.6x = 4.5 * 4 3.6x = 18 x = 18/3.6 x = 5

6. 15:4 = x:1.1/3 Cross-multiplying, we get: (1.1/3)x = 15 * 4 (1.1/3)x = 60 x = 60 / (1.1/3) x = 60 * (3/1.1) x = 163.64

Therefore, the solutions to the given equations are:

1. X = 2/3
2. x = 2
3. x = 5.25
4. x = 10
5. x = 5
6. x ≈ 163.64