Finding the Fourth Proportional to 3,872,001.38, 5,343,491.74 and 2,129,744.48
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Solution
The fourth proportional to 3,872,001.38, 5,343,491.74 and 2,129,744.48 is: 2,939,118.80
Step by Step Solution
- Step 1: Write the proportion equation
3,872,001.38 : 5,343,491.74 = 2,129,744.48 : x - Step 2: Convert to fraction form
3,872,001.38/5,343,491.74 = 2,129,744.48/x - Step 3: Cross multiply
3,872,001.38x = 5,343,491.74 × 2,129,744.48 - Step 4: Simplify right side
3,872,001.38x = 11,380,272,037,190.60 - Step 5: Solve for x
x = 11,380,272,037,190.60/3,872,001.38 - Step 6: Final answer
x = 2,939,118.80
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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.