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Finding the Fourth Proportional to 3,145.91, 4,719.56 and 1,198.13

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Solution

The fourth proportional to 3,145.91, 4,719.56 and 1,198.13 is: 1,797.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.91 : 4,719.56 = 1,198.13 : x
  2. Step 2: Convert to fraction form
    3,145.91/4,719.56 = 1,198.13/x
  3. Step 3: Cross multiply
    3,145.91x = 4,719.56 × 1,198.13
  4. Step 4: Simplify right side
    3,145.91x = 5,654,616.83
  5. Step 5: Solve for x
    x = 5,654,616.83/3,145.91
  6. Step 6: Final answer
    x = 1,797.45

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