Home / 3,712.80-5,123.48-2,033.90

Finding the Fourth Proportional to 3,712.80, 5,123.48 and 2,033.90

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Solution

The fourth proportional to 3,712.80, 5,123.48 and 2,033.90 is: 2,806.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.80 : 5,123.48 = 2,033.90 : x
  2. Step 2: Convert to fraction form
    3,712.80/5,123.48 = 2,033.90/x
  3. Step 3: Cross multiply
    3,712.80x = 5,123.48 × 2,033.90
  4. Step 4: Simplify right side
    3,712.80x = 10,420,648.61
  5. Step 5: Solve for x
    x = 10,420,648.61/3,712.80
  6. Step 6: Final answer
    x = 2,806.68

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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.