Home / 3,721.71-5,135.92-2,149.77

Finding the Fourth Proportional to 3,721.71, 5,135.92 and 2,149.77

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Solution

The fourth proportional to 3,721.71, 5,135.92 and 2,149.77 is: 2,966.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.71 : 5,135.92 = 2,149.77 : x
  2. Step 2: Convert to fraction form
    3,721.71/5,135.92 = 2,149.77/x
  3. Step 3: Cross multiply
    3,721.71x = 5,135.92 × 2,149.77
  4. Step 4: Simplify right side
    3,721.71x = 11,041,046.74
  5. Step 5: Solve for x
    x = 11,041,046.74/3,721.71
  6. Step 6: Final answer
    x = 2,966.66

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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.