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Finding the Third Proportional to 7,239 and 15,867

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Solution

The third proportional to 7,239 and 15,867 is: 34,778.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239 : 15,867 = 15,867 : x
  2. Step 2: Convert to fraction form
    7,239/15,867 = 15,867/x
  3. Step 3: Cross multiply
    7,239x = 15,867 × 15,867
  4. Step 4: Simplify right side
    7,239x = 251,761,689
  5. Step 5: Solve for x
    x = 251,761,689/7,239
  6. Step 6: Final answer
    x = 34,778.52

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.