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Finding the Fourth Proportional to 6,978.32, 9,630.12 and 3,791.64

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Solution

The fourth proportional to 6,978.32, 9,630.12 and 3,791.64 is: 5,232.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,978.32 : 9,630.12 = 3,791.64 : x
  2. Step 2: Convert to fraction form
    6,978.32/9,630.12 = 3,791.64/x
  3. Step 3: Cross multiply
    6,978.32x = 9,630.12 × 3,791.64
  4. Step 4: Simplify right side
    6,978.32x = 36,513,900.52
  5. Step 5: Solve for x
    x = 36,513,900.52/6,978.32
  6. Step 6: Final answer
    x = 5,232.48

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