Home / 2,721.28-3,755.76-1,542.64

Finding the Fourth Proportional to 2,721.28, 3,755.76 and 1,542.64

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Solution

The fourth proportional to 2,721.28, 3,755.76 and 1,542.64 is: 2,129.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.28 : 3,755.76 = 1,542.64 : x
  2. Step 2: Convert to fraction form
    2,721.28/3,755.76 = 1,542.64/x
  3. Step 3: Cross multiply
    2,721.28x = 3,755.76 × 1,542.64
  4. Step 4: Simplify right side
    2,721.28x = 5,793,785.61
  5. Step 5: Solve for x
    x = 5,793,785.61/2,721.28
  6. Step 6: Final answer
    x = 2,129.07

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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.