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Finding the Fourth Proportional to 3,198.75, 4,799.13 and 1,007.90

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Solution

The fourth proportional to 3,198.75, 4,799.13 and 1,007.90 is: 1,512.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.75 : 4,799.13 = 1,007.90 : x
  2. Step 2: Convert to fraction form
    3,198.75/4,799.13 = 1,007.90/x
  3. Step 3: Cross multiply
    3,198.75x = 4,799.13 × 1,007.90
  4. Step 4: Simplify right side
    3,198.75x = 4,837,043.13
  5. Step 5: Solve for x
    x = 4,837,043.13/3,198.75
  6. Step 6: Final answer
    x = 1,512.17

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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.