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Finding the Fourth Proportional to 3,198.54, 4,797.82 and 1,811.94

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Solution

The fourth proportional to 3,198.54, 4,797.82 and 1,811.94 is: 2,717.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.54 : 4,797.82 = 1,811.94 : x
  2. Step 2: Convert to fraction form
    3,198.54/4,797.82 = 1,811.94/x
  3. Step 3: Cross multiply
    3,198.54x = 4,797.82 × 1,811.94
  4. Step 4: Simplify right side
    3,198.54x = 8,693,361.97
  5. Step 5: Solve for x
    x = 8,693,361.97/3,198.54
  6. Step 6: Final answer
    x = 2,717.92

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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.