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Finding the Third Proportional to 1,331 and 3,251

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Solution

The third proportional to 1,331 and 3,251 is: 7,940.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331 : 3,251 = 3,251 : x
  2. Step 2: Convert to fraction form
    1,331/3,251 = 3,251/x
  3. Step 3: Cross multiply
    1,331x = 3,251 × 3,251
  4. Step 4: Simplify right side
    1,331x = 10,569,001
  5. Step 5: Solve for x
    x = 10,569,001/1,331
  6. Step 6: Final answer
    x = 7,940.65

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Why These Related Problems?

These problems maintain the same ratio (2.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.