Home / 2,822.20-4,229.18-2,666.40

Finding the Fourth Proportional to 2,822.20, 4,229.18 and 2,666.40

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Solution

The fourth proportional to 2,822.20, 4,229.18 and 2,666.40 is: 3,995.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.20 : 4,229.18 = 2,666.40 : x
  2. Step 2: Convert to fraction form
    2,822.20/4,229.18 = 2,666.40/x
  3. Step 3: Cross multiply
    2,822.20x = 4,229.18 × 2,666.40
  4. Step 4: Simplify right side
    2,822.20x = 11,276,685.55
  5. Step 5: Solve for x
    x = 11,276,685.55/2,822.20
  6. Step 6: Final answer
    x = 3,995.71

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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.