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Finding the Third Proportional to 4,157 and 8,755

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Solution

The third proportional to 4,157 and 8,755 is: 18,438.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,157 : 8,755 = 8,755 : x
  2. Step 2: Convert to fraction form
    4,157/8,755 = 8,755/x
  3. Step 3: Cross multiply
    4,157x = 8,755 × 8,755
  4. Step 4: Simplify right side
    4,157x = 76,650,025
  5. Step 5: Solve for x
    x = 76,650,025/4,157
  6. Step 6: Final answer
    x = 18,438.78

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.