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Finding the Third Proportional to 3,985.29 and 8,508.80

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Solution

The third proportional to 3,985.29 and 8,508.80 is: 18,166.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.29 : 8,508.80 = 8,508.80 : x
  2. Step 2: Convert to fraction form
    3,985.29/8,508.80 = 8,508.80/x
  3. Step 3: Cross multiply
    3,985.29x = 8,508.80 × 8,508.80
  4. Step 4: Simplify right side
    3,985.29x = 72,399,624.26
  5. Step 5: Solve for x
    x = 72,399,624.26/3,985.29
  6. Step 6: Final answer
    x = 18,166.69

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.