Home / 3,131.45-4,691.24-1,671.29

Finding the Fourth Proportional to 3,131.45, 4,691.24 and 1,671.29

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Solution

The fourth proportional to 3,131.45, 4,691.24 and 1,671.29 is: 2,503.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.45 : 4,691.24 = 1,671.29 : x
  2. Step 2: Convert to fraction form
    3,131.45/4,691.24 = 1,671.29/x
  3. Step 3: Cross multiply
    3,131.45x = 4,691.24 × 1,671.29
  4. Step 4: Simplify right side
    3,131.45x = 7,840,414.14
  5. Step 5: Solve for x
    x = 7,840,414.14/3,131.45
  6. Step 6: Final answer
    x = 2,503.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.