Home / 3,171.20-4,375.68-2,037.87

Finding the Fourth Proportional to 3,171.20, 4,375.68 and 2,037.87

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Solution

The fourth proportional to 3,171.20, 4,375.68 and 2,037.87 is: 2,811.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.20 : 4,375.68 = 2,037.87 : x
  2. Step 2: Convert to fraction form
    3,171.20/4,375.68 = 2,037.87/x
  3. Step 3: Cross multiply
    3,171.20x = 4,375.68 × 2,037.87
  4. Step 4: Simplify right side
    3,171.20x = 8,917,067.00
  5. Step 5: Solve for x
    x = 8,917,067.00/3,171.20
  6. Step 6: Final answer
    x = 2,811.89

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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.