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Finding the Fourth Proportional to 3,488.97, 5,234.78 and 1,615.78

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Solution

The fourth proportional to 3,488.97, 5,234.78 and 1,615.78 is: 2,424.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,488.97 : 5,234.78 = 1,615.78 : x
  2. Step 2: Convert to fraction form
    3,488.97/5,234.78 = 1,615.78/x
  3. Step 3: Cross multiply
    3,488.97x = 5,234.78 × 1,615.78
  4. Step 4: Simplify right side
    3,488.97x = 8,458,254.32
  5. Step 5: Solve for x
    x = 8,458,254.32/3,488.97
  6. Step 6: Final answer
    x = 2,424.28

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