Home / 3,721.13-5,135.15-2,042.57

Finding the Fourth Proportional to 3,721.13, 5,135.15 and 2,042.57

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Solution

The fourth proportional to 3,721.13, 5,135.15 and 2,042.57 is: 2,818.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.13 : 5,135.15 = 2,042.57 : x
  2. Step 2: Convert to fraction form
    3,721.13/5,135.15 = 2,042.57/x
  3. Step 3: Cross multiply
    3,721.13x = 5,135.15 × 2,042.57
  4. Step 4: Simplify right side
    3,721.13x = 10,488,867.45
  5. Step 5: Solve for x
    x = 10,488,867.45/3,721.13
  6. Step 6: Final answer
    x = 2,818.74

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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.