Home / 6,391.98-9,587.61-3,811.38

Finding the Fourth Proportional to 6,391.98, 9,587.61 and 3,811.38

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Solution

The fourth proportional to 6,391.98, 9,587.61 and 3,811.38 is: 5,716.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391.98 : 9,587.61 = 3,811.38 : x
  2. Step 2: Convert to fraction form
    6,391.98/9,587.61 = 3,811.38/x
  3. Step 3: Cross multiply
    6,391.98x = 9,587.61 × 3,811.38
  4. Step 4: Simplify right side
    6,391.98x = 36,542,025.00
  5. Step 5: Solve for x
    x = 36,542,025.00/6,391.98
  6. Step 6: Final answer
    x = 5,716.86

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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.