Finding the Fourth Proportional to 10,331.40, 15,495.58 and 3,405
Calculator
Solution
The fourth proportional to 10,331.40, 15,495.58 and 3,405 is: 5,107.00
Step by Step Solution
- Step 1: Write the proportion equation
10,331.40 : 15,495.58 = 3,405 : x - Step 2: Convert to fraction form
10,331.40/15,495.58 = 3,405/x - Step 3: Cross multiply
10,331.40x = 15,495.58 × 3,405 - Step 4: Simplify right side
10,331.40x = 52,762,449.90 - Step 5: Solve for x
x = 52,762,449.90/10,331.40 - Step 6: Final answer
x = 5,107.00
Related Problems
Find fourth proportional to 5,165.70, 7,747.79 and 1,702.50
Half scale
Find fourth proportional to 20,662.80, 30,991.16 and 6,810
Double scale
Find fourth proportional to 10,332.40, 15,497.08 and 3,406
Similar ratio
Find fourth proportional to 15,497.10, 23,243.37 and 5,107.50
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.