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Finding the Fourth Proportional to 2,489.32, 3,731.24 and 2,215.94

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Solution

The fourth proportional to 2,489.32, 3,731.24 and 2,215.94 is: 3,321.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.32 : 3,731.24 = 2,215.94 : x
  2. Step 2: Convert to fraction form
    2,489.32/3,731.24 = 2,215.94/x
  3. Step 3: Cross multiply
    2,489.32x = 3,731.24 × 2,215.94
  4. Step 4: Simplify right side
    2,489.32x = 8,268,203.97
  5. Step 5: Solve for x
    x = 8,268,203.97/2,489.32
  6. Step 6: Final answer
    x = 3,321.47

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