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Finding the Third Proportional to 4,239 and 8,775

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Solution

The third proportional to 4,239 and 8,775 is: 18,164.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,239 : 8,775 = 8,775 : x
  2. Step 2: Convert to fraction form
    4,239/8,775 = 8,775/x
  3. Step 3: Cross multiply
    4,239x = 8,775 × 8,775
  4. Step 4: Simplify right side
    4,239x = 77,000,625
  5. Step 5: Solve for x
    x = 77,000,625/4,239
  6. Step 6: Final answer
    x = 18,164.81

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.