Home / 3,221.78-4,446.01-1,805.52

Finding the Fourth Proportional to 3,221.78, 4,446.01 and 1,805.52

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Solution

The fourth proportional to 3,221.78, 4,446.01 and 1,805.52 is: 2,491.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.78 : 4,446.01 = 1,805.52 : x
  2. Step 2: Convert to fraction form
    3,221.78/4,446.01 = 1,805.52/x
  3. Step 3: Cross multiply
    3,221.78x = 4,446.01 × 1,805.52
  4. Step 4: Simplify right side
    3,221.78x = 8,027,350.95
  5. Step 5: Solve for x
    x = 8,027,350.95/3,221.78
  6. Step 6: Final answer
    x = 2,491.59

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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.