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Finding the Fourth Proportional to 6,479.97, 8,942.42 and 3,685.47

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Solution

The fourth proportional to 6,479.97, 8,942.42 and 3,685.47 is: 5,085.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479.97 : 8,942.42 = 3,685.47 : x
  2. Step 2: Convert to fraction form
    6,479.97/8,942.42 = 3,685.47/x
  3. Step 3: Cross multiply
    6,479.97x = 8,942.42 × 3,685.47
  4. Step 4: Simplify right side
    6,479.97x = 32,957,020.64
  5. Step 5: Solve for x
    x = 32,957,020.64/6,479.97
  6. Step 6: Final answer
    x = 5,085.98

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