Home / 7,867.64-11,791.20-3,969.92

Finding the Fourth Proportional to 7,867.64, 11,791.20 and 3,969.92

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Solution

The fourth proportional to 7,867.64, 11,791.20 and 3,969.92 is: 5,949.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,867.64 : 11,791.20 = 3,969.92 : x
  2. Step 2: Convert to fraction form
    7,867.64/11,791.20 = 3,969.92/x
  3. Step 3: Cross multiply
    7,867.64x = 11,791.20 × 3,969.92
  4. Step 4: Simplify right side
    7,867.64x = 46,810,120.70
  5. Step 5: Solve for x
    x = 46,810,120.70/7,867.64
  6. Step 6: Final answer
    x = 5,949.70

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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.