Advertisements
Advertisements
Question
Choose the correct answer from the given options :
If x, 12, 8 and 32 are in proportion, then the value of x is
Options
6
4
3
2
Advertisements
Solution
x, 12, 8, 32 are in proportion, then
x × 32 = 12 × 8 ..(∵ ad = bc)
⇒ x = `(12 xx 8)/(32)` = 3
x = 3
APPEARS IN
RELATED QUESTIONS
If a, b, c are in continued proportion and a(b - c) = 2b, prove that `a - c = (2(a + b))/a`
Find the smallest number that must be subtracted from each of the numbers 20, 29, 84 and 129 so that they are in proportion.
Find two numbers whose mean proportional is 18 and the third proportional is 486.
Find the mean proportion of: 5 and 80
If a, 12, 16 and b are in continued proportion find a and b.
Verify the following:
91 : 104 : : 119 : 136
If a, b, c and d are in proportion, prove that: (ma + nb) : b = (mc + nd) : d
`square` : 24 : : 3 : 8
Bachhu Manjhi earns Rs. 24000 in 8 months. At this rate, how much does he earn in one year?
The mean proportional to `sqrt(3) + sqrt(2)` and `sqrt(3) - sqrt(2)` is ______.
