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Finding the Fourth Proportional to 3,947.88, 5,921.73 and 3,707.31

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Solution

The fourth proportional to 3,947.88, 5,921.73 and 3,707.31 is: 5,560.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.88 : 5,921.73 = 3,707.31 : x
  2. Step 2: Convert to fraction form
    3,947.88/5,921.73 = 3,707.31/x
  3. Step 3: Cross multiply
    3,947.88x = 5,921.73 × 3,707.31
  4. Step 4: Simplify right side
    3,947.88x = 21,953,688.85
  5. Step 5: Solve for x
    x = 21,953,688.85/3,947.88
  6. Step 6: Final answer
    x = 5,560.88

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