问题 解答题
解比例:
(1)x:24=3:8
(2)8.1:x=1.8:36
(3)
1
2
2
3
=6:x
(4)
4.8
1.6
=
x
2
答案

(1)x:24=3:8,

8x=24×3,

x=

24×3
8

x=9,

(2)8.1:x=1.8:36,

1.8x=8.1×36,

x=

8.1×36
1.8

x=162,

(3)

1
2
2
3
=6:x

1
2
x=
2
3
×6,

1
2
x=4,

x=4÷

1
2

x=8,

(4)

4.8
1.6
=
x
2

1.6x=4.8×2,

x=

4.8×2
1.6

x=6.

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