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Finding the Fourth Proportional to 6,664.38, 9,991.17 and 2,771.70

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Solution

The fourth proportional to 6,664.38, 9,991.17 and 2,771.70 is: 4,155.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,664.38 : 9,991.17 = 2,771.70 : x
  2. Step 2: Convert to fraction form
    6,664.38/9,991.17 = 2,771.70/x
  3. Step 3: Cross multiply
    6,664.38x = 9,991.17 × 2,771.70
  4. Step 4: Simplify right side
    6,664.38x = 27,692,525.89
  5. Step 5: Solve for x
    x = 27,692,525.89/6,664.38
  6. Step 6: Final answer
    x = 4,155.30

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