Home / 2,821.96-4,229.66-1,520.70

Finding the Fourth Proportional to 2,821.96, 4,229.66 and 1,520.70

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Solution

The fourth proportional to 2,821.96, 4,229.66 and 1,520.70 is: 2,279.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.96 : 4,229.66 = 1,520.70 : x
  2. Step 2: Convert to fraction form
    2,821.96/4,229.66 = 1,520.70/x
  3. Step 3: Cross multiply
    2,821.96x = 4,229.66 × 1,520.70
  4. Step 4: Simplify right side
    2,821.96x = 6,432,043.96
  5. Step 5: Solve for x
    x = 6,432,043.96/2,821.96
  6. Step 6: Final answer
    x = 2,279.28

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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.