Determine if the following is in proportion.
5,9,15,27
If a,b,c,dare in proportion then,
a×d=b×c
So, here we have 5,9,15,27
in which
a=5,b=9,c=15,d=27
now, 5×27=135
and, 9×15=135
Hence a×d=b×c
So, 5,9,15,27 are in proportion.
Determine, if the following are in proportion:
5,7,40,56
Determine if the following numbers are in proportion.
2,9,6,27
15,45,40,120
Determine if the following are in proportion: 15,45,40,120