Home / 3,267.60-4,903.92-1,321.20

Finding the Fourth Proportional to 3,267.60, 4,903.92 and 1,321.20

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Solution

The fourth proportional to 3,267.60, 4,903.92 and 1,321.20 is: 1,982.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,267.60 : 4,903.92 = 1,321.20 : x
  2. Step 2: Convert to fraction form
    3,267.60/4,903.92 = 1,321.20/x
  3. Step 3: Cross multiply
    3,267.60x = 4,903.92 × 1,321.20
  4. Step 4: Simplify right side
    3,267.60x = 6,479,059.10
  5. Step 5: Solve for x
    x = 6,479,059.10/3,267.60
  6. Step 6: Final answer
    x = 1,982.82

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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.