Home / 3,221.20-4,826.11-2,821.42

Finding the Fourth Proportional to 3,221.20, 4,826.11 and 2,821.42

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Solution

The fourth proportional to 3,221.20, 4,826.11 and 2,821.42 is: 4,227.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.20 : 4,826.11 = 2,821.42 : x
  2. Step 2: Convert to fraction form
    3,221.20/4,826.11 = 2,821.42/x
  3. Step 3: Cross multiply
    3,221.20x = 4,826.11 × 2,821.42
  4. Step 4: Simplify right side
    3,221.20x = 13,616,459.15
  5. Step 5: Solve for x
    x = 13,616,459.15/3,221.20
  6. Step 6: Final answer
    x = 4,227.15

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1.5x scale

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.