Finding the Fourth Proportional to 3,872,000.38, 5,343,490.36 and 2,129,743.48
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Solution
The fourth proportional to 3,872,000.38, 5,343,490.36 and 2,129,743.48 is: 2,939,117.42
Step by Step Solution
- Step 1: Write the proportion equation
3,872,000.38 : 5,343,490.36 = 2,129,743.48 : x - Step 2: Convert to fraction form
3,872,000.38/5,343,490.36 = 2,129,743.48/x - Step 3: Cross multiply
3,872,000.38x = 5,343,490.36 × 2,129,743.48 - Step 4: Simplify right side
3,872,000.38x = 11,380,263,754,652.85 - Step 5: Solve for x
x = 11,380,263,754,652.85/3,872,000.38 - Step 6: Final answer
x = 2,939,117.42
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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.