Home / 3,866.20-5,799.30-2,221.90

Finding the Fourth Proportional to 3,866.20, 5,799.30 and 2,221.90

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Solution

The fourth proportional to 3,866.20, 5,799.30 and 2,221.90 is: 3,332.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.20 : 5,799.30 = 2,221.90 : x
  2. Step 2: Convert to fraction form
    3,866.20/5,799.30 = 2,221.90/x
  3. Step 3: Cross multiply
    3,866.20x = 5,799.30 × 2,221.90
  4. Step 4: Simplify right side
    3,866.20x = 12,885,464.67
  5. Step 5: Solve for x
    x = 12,885,464.67/3,866.20
  6. Step 6: Final answer
    x = 3,332.85

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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.