Home / 3,221.95-4,446.39-2,279.44

Finding the Fourth Proportional to 3,221.95, 4,446.39 and 2,279.44

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Solution

The fourth proportional to 3,221.95, 4,446.39 and 2,279.44 is: 3,145.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.95 : 4,446.39 = 2,279.44 : x
  2. Step 2: Convert to fraction form
    3,221.95/4,446.39 = 2,279.44/x
  3. Step 3: Cross multiply
    3,221.95x = 4,446.39 × 2,279.44
  4. Step 4: Simplify right side
    3,221.95x = 10,135,279.22
  5. Step 5: Solve for x
    x = 10,135,279.22/3,221.95
  6. Step 6: Final answer
    x = 3,145.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.