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Finding the Third Proportional to 2,689 and 5,701

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Solution

The third proportional to 2,689 and 5,701 is: 12,086.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689 : 5,701 = 5,701 : x
  2. Step 2: Convert to fraction form
    2,689/5,701 = 5,701/x
  3. Step 3: Cross multiply
    2,689x = 5,701 × 5,701
  4. Step 4: Simplify right side
    2,689x = 32,501,401
  5. Step 5: Solve for x
    x = 32,501,401/2,689
  6. Step 6: Final answer
    x = 12,086.80

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.