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Finding the Fourth Proportional to 8,608.83, 12,913.65 and 2,689.76

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Solution

The fourth proportional to 8,608.83, 12,913.65 and 2,689.76 is: 4,034.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.83 : 12,913.65 = 2,689.76 : x
  2. Step 2: Convert to fraction form
    8,608.83/12,913.65 = 2,689.76/x
  3. Step 3: Cross multiply
    8,608.83x = 12,913.65 × 2,689.76
  4. Step 4: Simplify right side
    8,608.83x = 34,734,554.66
  5. Step 5: Solve for x
    x = 34,734,554.66/8,608.83
  6. Step 6: Final answer
    x = 4,034.76

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