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Finding the Fourth Proportional to 3,939.30, 5,908.95 and 1,859.36

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Solution

The fourth proportional to 3,939.30, 5,908.95 and 1,859.36 is: 2,789.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.30 : 5,908.95 = 1,859.36 : x
  2. Step 2: Convert to fraction form
    3,939.30/5,908.95 = 1,859.36/x
  3. Step 3: Cross multiply
    3,939.30x = 5,908.95 × 1,859.36
  4. Step 4: Simplify right side
    3,939.30x = 10,986,835.73
  5. Step 5: Solve for x
    x = 10,986,835.73/3,939.30
  6. Step 6: Final answer
    x = 2,789.03

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