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Finding the Third Proportional to 2,605 and 3,961

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Solution

The third proportional to 2,605 and 3,961 is: 6,022.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605 : 3,961 = 3,961 : x
  2. Step 2: Convert to fraction form
    2,605/3,961 = 3,961/x
  3. Step 3: Cross multiply
    2,605x = 3,961 × 3,961
  4. Step 4: Simplify right side
    2,605x = 15,689,521
  5. Step 5: Solve for x
    x = 15,689,521/2,605
  6. Step 6: Final answer
    x = 6,022.85

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.