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Finding the Fourth Proportional to 8,243.16, 12,368.80 and 3,859.86

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Solution

The fourth proportional to 8,243.16, 12,368.80 and 3,859.86 is: 5,791.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,243.16 : 12,368.80 = 3,859.86 : x
  2. Step 2: Convert to fraction form
    8,243.16/12,368.80 = 3,859.86/x
  3. Step 3: Cross multiply
    8,243.16x = 12,368.80 × 3,859.86
  4. Step 4: Simplify right side
    8,243.16x = 47,741,836.37
  5. Step 5: Solve for x
    x = 47,741,836.37/8,243.16
  6. Step 6: Final answer
    x = 5,791.69

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