Home / 3,198.28-4,789.12-3,003.72

Finding the Fourth Proportional to 3,198.28, 4,789.12 and 3,003.72

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Solution

The fourth proportional to 3,198.28, 4,789.12 and 3,003.72 is: 4,497.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.28 : 4,789.12 = 3,003.72 : x
  2. Step 2: Convert to fraction form
    3,198.28/4,789.12 = 3,003.72/x
  3. Step 3: Cross multiply
    3,198.28x = 4,789.12 × 3,003.72
  4. Step 4: Simplify right side
    3,198.28x = 14,385,175.53
  5. Step 5: Solve for x
    x = 14,385,175.53/3,198.28
  6. Step 6: Final answer
    x = 4,497.78

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1.5x scale

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.