Home / 2,221.18-3,331.98-577.72

Finding the Fourth Proportional to 2,221.18, 3,331.98 and 577.72

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Solution

The fourth proportional to 2,221.18, 3,331.98 and 577.72 is: 866.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.18 : 3,331.98 = 577.72 : x
  2. Step 2: Convert to fraction form
    2,221.18/3,331.98 = 577.72/x
  3. Step 3: Cross multiply
    2,221.18x = 3,331.98 × 577.72
  4. Step 4: Simplify right side
    2,221.18x = 1,924,951.49
  5. Step 5: Solve for x
    x = 1,924,951.49/2,221.18
  6. Step 6: Final answer
    x = 866.63

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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.