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Finding the Fourth Proportional to 3,198.87, 4,798.30 and 1,007.61

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Solution

The fourth proportional to 3,198.87, 4,798.30 and 1,007.61 is: 1,511.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.87 : 4,798.30 = 1,007.61 : x
  2. Step 2: Convert to fraction form
    3,198.87/4,798.30 = 1,007.61/x
  3. Step 3: Cross multiply
    3,198.87x = 4,798.30 × 1,007.61
  4. Step 4: Simplify right side
    3,198.87x = 4,834,838.34
  5. Step 5: Solve for x
    x = 4,834,838.34/3,198.87
  6. Step 6: Final answer
    x = 1,511.42

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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.