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Finding the Fourth Proportional to 6,140.29, 9,213.15 and 3,217.90

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Solution

The fourth proportional to 6,140.29, 9,213.15 and 3,217.90 is: 4,828.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,140.29 : 9,213.15 = 3,217.90 : x
  2. Step 2: Convert to fraction form
    6,140.29/9,213.15 = 3,217.90/x
  3. Step 3: Cross multiply
    6,140.29x = 9,213.15 × 3,217.90
  4. Step 4: Simplify right side
    6,140.29x = 29,646,949.32
  5. Step 5: Solve for x
    x = 29,646,949.32/6,140.29
  6. Step 6: Final answer
    x = 4,828.27

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