Finding the Fourth Proportional to 3,820,135.50, 5,272,535.70 and 2,189,635.74
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Solution
The fourth proportional to 3,820,135.50, 5,272,535.70 and 2,189,635.74 is: 3,022,126.47
Step by Step Solution
- Step 1: Write the proportion equation
3,820,135.50 : 5,272,535.70 = 2,189,635.74 : x - Step 2: Convert to fraction form
3,820,135.50/5,272,535.70 = 2,189,635.74/x - Step 3: Cross multiply
3,820,135.50x = 5,272,535.70 × 2,189,635.74 - Step 4: Simplify right side
3,820,135.50x = 11,544,932,609,145.92 - Step 5: Solve for x
x = 11,544,932,609,145.92/3,820,135.50 - Step 6: Final answer
x = 3,022,126.47
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.