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Finding the Third Proportional to 8,318 and 11,397

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Solution

The third proportional to 8,318 and 11,397 is: 15,615.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318 : 11,397 = 11,397 : x
  2. Step 2: Convert to fraction form
    8,318/11,397 = 11,397/x
  3. Step 3: Cross multiply
    8,318x = 11,397 × 11,397
  4. Step 4: Simplify right side
    8,318x = 129,891,609
  5. Step 5: Solve for x
    x = 129,891,609/8,318
  6. Step 6: Final answer
    x = 15,615.73

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.