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Finding the Third Proportional to 4,372.59 and 9,328.78

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Solution

The third proportional to 4,372.59 and 9,328.78 is: 19,902.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,372.59 : 9,328.78 = 9,328.78 : x
  2. Step 2: Convert to fraction form
    4,372.59/9,328.78 = 9,328.78/x
  3. Step 3: Cross multiply
    4,372.59x = 9,328.78 × 9,328.78
  4. Step 4: Simplify right side
    4,372.59x = 87,026,159.61
  5. Step 5: Solve for x
    x = 87,026,159.61/4,372.59
  6. Step 6: Final answer
    x = 19,902.64

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.