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Finding the Third Proportional to 6,912 and 9,126

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Solution

The third proportional to 6,912 and 9,126 is: 12,049.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912 : 9,126 = 9,126 : x
  2. Step 2: Convert to fraction form
    6,912/9,126 = 9,126/x
  3. Step 3: Cross multiply
    6,912x = 9,126 × 9,126
  4. Step 4: Simplify right side
    6,912x = 83,283,876
  5. Step 5: Solve for x
    x = 83,283,876/6,912
  6. Step 6: Final answer
    x = 12,049.17

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.