Home / 3,188.73-4,399.11-1,861.95

Finding the Fourth Proportional to 3,188.73, 4,399.11 and 1,861.95

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Solution

The fourth proportional to 3,188.73, 4,399.11 and 1,861.95 is: 2,568.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.73 : 4,399.11 = 1,861.95 : x
  2. Step 2: Convert to fraction form
    3,188.73/4,399.11 = 1,861.95/x
  3. Step 3: Cross multiply
    3,188.73x = 4,399.11 × 1,861.95
  4. Step 4: Simplify right side
    3,188.73x = 8,190,922.86
  5. Step 5: Solve for x
    x = 8,190,922.86/3,188.73
  6. Step 6: Final answer
    x = 2,568.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.