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Finding the Third Proportional to 3,519 and 7,661

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Solution

The third proportional to 3,519 and 7,661 is: 16,678.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,519 : 7,661 = 7,661 : x
  2. Step 2: Convert to fraction form
    3,519/7,661 = 7,661/x
  3. Step 3: Cross multiply
    3,519x = 7,661 × 7,661
  4. Step 4: Simplify right side
    3,519x = 58,690,921
  5. Step 5: Solve for x
    x = 58,690,921/3,519
  6. Step 6: Final answer
    x = 16,678.30

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.