Question

The second , third and fourth terms of proportion are 27 , 35 and 63
Find the first term .
Please tell the answer fast
Please explain by step by step explanation ​
please help ​

Answer 1

Answer:

tn=a+(n-1)d

27=a+(2-1)d

27=a+d.....first term

35=a+(3-1)d

35=a+2d.....second term

63=a+(4-1)d

63=a+3d.....third term

solve (1) and (2) term by linear equations in two variable

27=a+d

35=a+2d

d=8

27=a+2(8)

27=a+16

a=11

hope this answer is helpful for u bye!!

Answer 2

Answer:

∴x=15

Step-by-step explanation:

Let the first term be x

x:27: :35:63

=$\frac{x}{27} :\frac{35}{63}$

⇒$x=\frac{35*27}{63}$

⇒x=15