问题 解答题
解比例
x:3.5=1.4:5.6
x
24
=
5
6

3
4
1
5
=x:
2
5

14
x
=
21
4

x:
2
5
=10:
2
7

1.24:x=2.48:0.4.
答案

(1)x:3.5=1.4:5.6

5.6x=3.5×1.4

5.6x=4.9

x=0.875

(2)

x
24
=
5
6

6x=24×5

6x=120

x=20

(3)

3
4
1
5
=x:
2
5

1
5
x=
3
4
×
2
5

1
5
x=
3
10

x=

3
2

(4)

14
x
=
21
4

21x=56

x=

8
3

(5)x:

2
5
=10:
2
7

2
7
x=
2
5
×10

2
7
x=4

x=14

(6)1.24:x=2.48:0.4

2.48x=1.24×0.4

2.48x=0.496

x=0.2

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