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Finding the Fourth Proportional to 3,281.18, 4,919.18 and 1,636.88

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Solution

The fourth proportional to 3,281.18, 4,919.18 and 1,636.88 is: 2,454.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.18 : 4,919.18 = 1,636.88 : x
  2. Step 2: Convert to fraction form
    3,281.18/4,919.18 = 1,636.88/x
  3. Step 3: Cross multiply
    3,281.18x = 4,919.18 × 1,636.88
  4. Step 4: Simplify right side
    3,281.18x = 8,052,074.58
  5. Step 5: Solve for x
    x = 8,052,074.58/3,281.18
  6. Step 6: Final answer
    x = 2,454.02

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