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Finding the Fourth Proportional to 3,660.74, 5,489.14 and 1,903.98

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Solution

The fourth proportional to 3,660.74, 5,489.14 and 1,903.98 is: 2,854.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.74 : 5,489.14 = 1,903.98 : x
  2. Step 2: Convert to fraction form
    3,660.74/5,489.14 = 1,903.98/x
  3. Step 3: Cross multiply
    3,660.74x = 5,489.14 × 1,903.98
  4. Step 4: Simplify right side
    3,660.74x = 10,451,212.78
  5. Step 5: Solve for x
    x = 10,451,212.78/3,660.74
  6. Step 6: Final answer
    x = 2,854.95

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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.