Finding the Fourth Proportional to 3,936,905.88, 5,432,930.08 and 2,126,069.88
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Solution
The fourth proportional to 3,936,905.88, 5,432,930.08 and 2,126,069.88 is: 2,933,976.41
Step by Step Solution
- Step 1: Write the proportion equation
3,936,905.88 : 5,432,930.08 = 2,126,069.88 : x - Step 2: Convert to fraction form
3,936,905.88/5,432,930.08 = 2,126,069.88/x - Step 3: Cross multiply
3,936,905.88x = 5,432,930.08 × 2,126,069.88 - Step 4: Simplify right side
3,936,905.88x = 11,550,788,977,545.33 - Step 5: Solve for x
x = 11,550,788,977,545.33/3,936,905.88 - Step 6: Final answer
x = 2,933,976.41
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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.