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Finding the Fourth Proportional to 8,111.75, 12,167.64 and 1,955.75

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Solution

The fourth proportional to 8,111.75, 12,167.64 and 1,955.75 is: 2,933.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.75 : 12,167.64 = 1,955.75 : x
  2. Step 2: Convert to fraction form
    8,111.75/12,167.64 = 1,955.75/x
  3. Step 3: Cross multiply
    8,111.75x = 12,167.64 × 1,955.75
  4. Step 4: Simplify right side
    8,111.75x = 23,796,861.93
  5. Step 5: Solve for x
    x = 23,796,861.93/8,111.75
  6. Step 6: Final answer
    x = 2,933.63

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