Home / 3,221.81-4,446.06-1,805.49

Finding the Fourth Proportional to 3,221.81, 4,446.06 and 1,805.49

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Solution

The fourth proportional to 3,221.81, 4,446.06 and 1,805.49 is: 2,491.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.81 : 4,446.06 = 1,805.49 : x
  2. Step 2: Convert to fraction form
    3,221.81/4,446.06 = 1,805.49/x
  3. Step 3: Cross multiply
    3,221.81x = 4,446.06 × 1,805.49
  4. Step 4: Simplify right side
    3,221.81x = 8,027,327.31
  5. Step 5: Solve for x
    x = 8,027,327.31/3,221.81
  6. Step 6: Final answer
    x = 2,491.56

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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.