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Finding the Fourth Proportional to 3,478.96, 5,215.96 and 1,629.06

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Solution

The fourth proportional to 3,478.96, 5,215.96 and 1,629.06 is: 2,442.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.96 : 5,215.96 = 1,629.06 : x
  2. Step 2: Convert to fraction form
    3,478.96/5,215.96 = 1,629.06/x
  3. Step 3: Cross multiply
    3,478.96x = 5,215.96 × 1,629.06
  4. Step 4: Simplify right side
    3,478.96x = 8,497,107.72
  5. Step 5: Solve for x
    x = 8,497,107.72/3,478.96
  6. Step 6: Final answer
    x = 2,442.43

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