Solve the proportion in two different ways. First change all the numbers to decimal form and solve. Then change all the numbers to fraction form and solve.
2/5/x = 2/0.4
To solve the proportion by changing all the numbers to decimal form, we can rewrite the proportion as:
0.4/x = 2/0.4
Now we can cross multiply:
0.4 * 0.4 = x * 2
0.16 = 2x
Dividing both sides by 2:
0.16/2 = x
x = 0.08
To solve the proportion by changing all the numbers to fraction form, we can rewrite the proportion as:
2/5/x = 2/2/5
Simplifying the right side:
2/5/x = 1/5
Now, we can cross multiply:
1 * 5 = x * 2
5 = 2x
Dividing both sides by 2:
5/2 = x
x = 2.5