Home / 2,972.97-4,101.17-2,761.90

Finding the Fourth Proportional to 2,972.97, 4,101.17 and 2,761.90

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Solution

The fourth proportional to 2,972.97, 4,101.17 and 2,761.90 is: 3,809.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.97 : 4,101.17 = 2,761.90 : x
  2. Step 2: Convert to fraction form
    2,972.97/4,101.17 = 2,761.90/x
  3. Step 3: Cross multiply
    2,972.97x = 4,101.17 × 2,761.90
  4. Step 4: Simplify right side
    2,972.97x = 11,326,997.36
  5. Step 5: Solve for x
    x = 11,326,997.36/2,972.97
  6. Step 6: Final answer
    x = 3,809.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.