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Finding the Third Proportional to 2,551 and 3,881

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Solution

The third proportional to 2,551 and 3,881 is: 5,904.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,551 : 3,881 = 3,881 : x
  2. Step 2: Convert to fraction form
    2,551/3,881 = 3,881/x
  3. Step 3: Cross multiply
    2,551x = 3,881 × 3,881
  4. Step 4: Simplify right side
    2,551x = 15,062,161
  5. Step 5: Solve for x
    x = 15,062,161/2,551
  6. Step 6: Final answer
    x = 5,904.41

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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.