Home / 1,972.43-2,721.17-1,723.76

Finding the Fourth Proportional to 1,972.43, 2,721.17 and 1,723.76

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Solution

The fourth proportional to 1,972.43, 2,721.17 and 1,723.76 is: 2,378.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.43 : 2,721.17 = 1,723.76 : x
  2. Step 2: Convert to fraction form
    1,972.43/2,721.17 = 1,723.76/x
  3. Step 3: Cross multiply
    1,972.43x = 2,721.17 × 1,723.76
  4. Step 4: Simplify right side
    1,972.43x = 4,690,634.70
  5. Step 5: Solve for x
    x = 4,690,634.70/1,972.43
  6. Step 6: Final answer
    x = 2,378.11

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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.