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Finding the Third Proportional to 8,347 and 11,243

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Solution

The third proportional to 8,347 and 11,243 is: 15,143.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,347 : 11,243 = 11,243 : x
  2. Step 2: Convert to fraction form
    8,347/11,243 = 11,243/x
  3. Step 3: Cross multiply
    8,347x = 11,243 × 11,243
  4. Step 4: Simplify right side
    8,347x = 126,405,049
  5. Step 5: Solve for x
    x = 126,405,049/8,347
  6. Step 6: Final answer
    x = 15,143.77

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.