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Finding the Third Proportional to 2,561 and 5,245

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Solution

The third proportional to 2,561 and 5,245 is: 10,741.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,561 : 5,245 = 5,245 : x
  2. Step 2: Convert to fraction form
    2,561/5,245 = 5,245/x
  3. Step 3: Cross multiply
    2,561x = 5,245 × 5,245
  4. Step 4: Simplify right side
    2,561x = 27,510,025
  5. Step 5: Solve for x
    x = 27,510,025/2,561
  6. Step 6: Final answer
    x = 10,741.91

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.