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Finding the Fourth Proportional to 6,387.28, 9,568.12 and 2,919.76

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Solution

The fourth proportional to 6,387.28, 9,568.12 and 2,919.76 is: 4,373.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.28 : 9,568.12 = 2,919.76 : x
  2. Step 2: Convert to fraction form
    6,387.28/9,568.12 = 2,919.76/x
  3. Step 3: Cross multiply
    6,387.28x = 9,568.12 × 2,919.76
  4. Step 4: Simplify right side
    6,387.28x = 27,936,614.05
  5. Step 5: Solve for x
    x = 27,936,614.05/6,387.28
  6. Step 6: Final answer
    x = 4,373.79

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