Home / 2,772.20-4,149.60-1,521.08

Finding the Fourth Proportional to 2,772.20, 4,149.60 and 1,521.08

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Solution

The fourth proportional to 2,772.20, 4,149.60 and 1,521.08 is: 2,276.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.20 : 4,149.60 = 1,521.08 : x
  2. Step 2: Convert to fraction form
    2,772.20/4,149.60 = 1,521.08/x
  3. Step 3: Cross multiply
    2,772.20x = 4,149.60 × 1,521.08
  4. Step 4: Simplify right side
    2,772.20x = 6,311,873.57
  5. Step 5: Solve for x
    x = 6,311,873.57/2,772.20
  6. Step 6: Final answer
    x = 2,276.85

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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.