Finding the Fourth Proportional to 2,157,129.40, 3,235,694.10 and 2,129,135.80
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Solution
The fourth proportional to 2,157,129.40, 3,235,694.10 and 2,129,135.80 is: 3,193,703.70
Step by Step Solution
- Step 1: Write the proportion equation
2,157,129.40 : 3,235,694.10 = 2,129,135.80 : x - Step 2: Convert to fraction form
2,157,129.40/3,235,694.10 = 2,129,135.80/x - Step 3: Cross multiply
2,157,129.40x = 3,235,694.10 × 2,129,135.80 - Step 4: Simplify right side
2,157,129.40x = 6,889,232,146,158.78 - Step 5: Solve for x
x = 6,889,232,146,158.78/2,157,129.40 - Step 6: Final answer
x = 3,193,703.70
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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.