Finding the Fourth Proportional to 2,116.28, 3,174 and 655.08
Calculator
Solution
The fourth proportional to 2,116.28, 3,174 and 655.08 is: 982.49
Step by Step Solution
- Step 1: Write the proportion equation
2,116.28 : 3,174 = 655.08 : x - Step 2: Convert to fraction form
2,116.28/3,174 = 655.08/x - Step 3: Cross multiply
2,116.28x = 3,174 × 655.08 - Step 4: Simplify right side
2,116.28x = 2,079,223.92 - Step 5: Solve for x
x = 2,079,223.92/2,116.28 - Step 6: Final answer
x = 982.49
Related Problems
Find fourth proportional to 1,058.14, 1,587 and 327.54
Half scale
Find fourth proportional to 4,232.56, 6,348 and 1,310.16
Double scale
Find fourth proportional to 2,117.28, 3,175.50 and 656.08
Similar ratio
Find fourth proportional to 3,174.42, 4,761 and 982.62
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.