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Finding the Third Proportional to 6,909 and 10,717

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Solution

The third proportional to 6,909 and 10,717 is: 16,623.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,909 : 10,717 = 10,717 : x
  2. Step 2: Convert to fraction form
    6,909/10,717 = 10,717/x
  3. Step 3: Cross multiply
    6,909x = 10,717 × 10,717
  4. Step 4: Simplify right side
    6,909x = 114,854,089
  5. Step 5: Solve for x
    x = 114,854,089/6,909
  6. Step 6: Final answer
    x = 16,623.84

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.