Home / 2,221.20-3,331.78-577.73

Finding the Fourth Proportional to 2,221.20, 3,331.78 and 577.73

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Solution

The fourth proportional to 2,221.20, 3,331.78 and 577.73 is: 866.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.20 : 3,331.78 = 577.73 : x
  2. Step 2: Convert to fraction form
    2,221.20/3,331.78 = 577.73/x
  3. Step 3: Cross multiply
    2,221.20x = 3,331.78 × 577.73
  4. Step 4: Simplify right side
    2,221.20x = 1,924,876.14
  5. Step 5: Solve for x
    x = 1,924,876.14/2,221.20
  6. Step 6: Final answer
    x = 866.59

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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.