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Finding the Fourth Proportional to 10,648.82, 15,974.19 and 2,857.58

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Solution

The fourth proportional to 10,648.82, 15,974.19 and 2,857.58 is: 4,286.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,648.82 : 15,974.19 = 2,857.58 : x
  2. Step 2: Convert to fraction form
    10,648.82/15,974.19 = 2,857.58/x
  3. Step 3: Cross multiply
    10,648.82x = 15,974.19 × 2,857.58
  4. Step 4: Simplify right side
    10,648.82x = 45,647,525.86
  5. Step 5: Solve for x
    x = 45,647,525.86/10,648.82
  6. Step 6: Final answer
    x = 4,286.63

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