Home / 2,821.70-4,229.30-1,520.44

Finding the Fourth Proportional to 2,821.70, 4,229.30 and 1,520.44

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Solution

The fourth proportional to 2,821.70, 4,229.30 and 1,520.44 is: 2,278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.70 : 4,229.30 = 1,520.44 : x
  2. Step 2: Convert to fraction form
    2,821.70/4,229.30 = 1,520.44/x
  3. Step 3: Cross multiply
    2,821.70x = 4,229.30 × 1,520.44
  4. Step 4: Simplify right side
    2,821.70x = 6,430,390.12
  5. Step 5: Solve for x
    x = 6,430,390.12/2,821.70
  6. Step 6: Final answer
    x = 2,278.90

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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.