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Finding the Third Proportional to 2,561 and 2,801

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Solution

The third proportional to 2,561 and 2,801 is: 3,063.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,561 : 2,801 = 2,801 : x
  2. Step 2: Convert to fraction form
    2,561/2,801 = 2,801/x
  3. Step 3: Cross multiply
    2,561x = 2,801 × 2,801
  4. Step 4: Simplify right side
    2,561x = 7,845,601
  5. Step 5: Solve for x
    x = 7,845,601/2,561
  6. Step 6: Final answer
    x = 3,063.49

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.