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Finding the Fourth Proportional to 3,286.60, 4,929 and 1,619.92

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Solution

The fourth proportional to 3,286.60, 4,929 and 1,619.92 is: 2,429.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,286.60 : 4,929 = 1,619.92 : x
  2. Step 2: Convert to fraction form
    3,286.60/4,929 = 1,619.92/x
  3. Step 3: Cross multiply
    3,286.60x = 4,929 × 1,619.92
  4. Step 4: Simplify right side
    3,286.60x = 7,984,585.68
  5. Step 5: Solve for x
    x = 7,984,585.68/3,286.60
  6. Step 6: Final answer
    x = 2,429.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.