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Finding the Third Proportional to 2,791 and 3,901

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Solution

The third proportional to 2,791 and 3,901 is: 5,452.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791 : 3,901 = 3,901 : x
  2. Step 2: Convert to fraction form
    2,791/3,901 = 3,901/x
  3. Step 3: Cross multiply
    2,791x = 3,901 × 3,901
  4. Step 4: Simplify right side
    2,791x = 15,217,801
  5. Step 5: Solve for x
    x = 15,217,801/2,791
  6. Step 6: Final answer
    x = 5,452.45

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.