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Finding the Fourth Proportional to 5,647.44, 8,472.78 and 2,187.12

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Solution

The fourth proportional to 5,647.44, 8,472.78 and 2,187.12 is: 3,281.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,647.44 : 8,472.78 = 2,187.12 : x
  2. Step 2: Convert to fraction form
    5,647.44/8,472.78 = 2,187.12/x
  3. Step 3: Cross multiply
    5,647.44x = 8,472.78 × 2,187.12
  4. Step 4: Simplify right side
    5,647.44x = 18,530,986.59
  5. Step 5: Solve for x
    x = 18,530,986.59/5,647.44
  6. Step 6: Final answer
    x = 3,281.31

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