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Finding the Fourth Proportional to 8,609.28, 12,913.86 and 2,453.28

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Solution

The fourth proportional to 8,609.28, 12,913.86 and 2,453.28 is: 3,679.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.28 : 12,913.86 = 2,453.28 : x
  2. Step 2: Convert to fraction form
    8,609.28/12,913.86 = 2,453.28/x
  3. Step 3: Cross multiply
    8,609.28x = 12,913.86 × 2,453.28
  4. Step 4: Simplify right side
    8,609.28x = 31,681,314.46
  5. Step 5: Solve for x
    x = 31,681,314.46/8,609.28
  6. Step 6: Final answer
    x = 3,679.90

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