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Finding the Fourth Proportional to 3,868.56, 5,809.32 and 3,288.60

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Solution

The fourth proportional to 3,868.56, 5,809.32 and 3,288.60 is: 4,938.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.56 : 5,809.32 = 3,288.60 : x
  2. Step 2: Convert to fraction form
    3,868.56/5,809.32 = 3,288.60/x
  3. Step 3: Cross multiply
    3,868.56x = 5,809.32 × 3,288.60
  4. Step 4: Simplify right side
    3,868.56x = 19,104,529.75
  5. Step 5: Solve for x
    x = 19,104,529.75/3,868.56
  6. Step 6: Final answer
    x = 4,938.41

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