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Finding the Third Proportional to 7,709 and 16,909

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Solution

The third proportional to 7,709 and 16,909 is: 37,088.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,709 : 16,909 = 16,909 : x
  2. Step 2: Convert to fraction form
    7,709/16,909 = 16,909/x
  3. Step 3: Cross multiply
    7,709x = 16,909 × 16,909
  4. Step 4: Simplify right side
    7,709x = 285,914,281
  5. Step 5: Solve for x
    x = 285,914,281/7,709
  6. Step 6: Final answer
    x = 37,088.37

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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.