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Finding the Third Proportional to 1,279 and 1,976

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Solution

The third proportional to 1,279 and 1,976 is: 3,052.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279 : 1,976 = 1,976 : x
  2. Step 2: Convert to fraction form
    1,279/1,976 = 1,976/x
  3. Step 3: Cross multiply
    1,279x = 1,976 × 1,976
  4. Step 4: Simplify right side
    1,279x = 3,904,576
  5. Step 5: Solve for x
    x = 3,904,576/1,279
  6. Step 6: Final answer
    x = 3,052.84

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.