Home / 2,227.20-3,340.80-667.20

Finding the Fourth Proportional to 2,227.20, 3,340.80 and 667.20

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Solution

The fourth proportional to 2,227.20, 3,340.80 and 667.20 is: 1,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,227.20 : 3,340.80 = 667.20 : x
  2. Step 2: Convert to fraction form
    2,227.20/3,340.80 = 667.20/x
  3. Step 3: Cross multiply
    2,227.20x = 3,340.80 × 667.20
  4. Step 4: Simplify right side
    2,227.20x = 2,228,981.76
  5. Step 5: Solve for x
    x = 2,228,981.76/2,227.20
  6. Step 6: Final answer
    x = 1,000.80

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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.