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Finding the Fourth Proportional to 7,939.60, 11,906.35 and 3,776.40

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Solution

The fourth proportional to 7,939.60, 11,906.35 and 3,776.40 is: 5,663.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.60 : 11,906.35 = 3,776.40 : x
  2. Step 2: Convert to fraction form
    7,939.60/11,906.35 = 3,776.40/x
  3. Step 3: Cross multiply
    7,939.60x = 11,906.35 × 3,776.40
  4. Step 4: Simplify right side
    7,939.60x = 44,963,140.14
  5. Step 5: Solve for x
    x = 44,963,140.14/7,939.60
  6. Step 6: Final answer
    x = 5,663.15

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