Home / 3,899.20-5,381.52-2,327.68

Finding the Fourth Proportional to 3,899.20, 5,381.52 and 2,327.68

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Solution

The fourth proportional to 3,899.20, 5,381.52 and 2,327.68 is: 3,212.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.20 : 5,381.52 = 2,327.68 : x
  2. Step 2: Convert to fraction form
    3,899.20/5,381.52 = 2,327.68/x
  3. Step 3: Cross multiply
    3,899.20x = 5,381.52 × 2,327.68
  4. Step 4: Simplify right side
    3,899.20x = 12,526,456.47
  5. Step 5: Solve for x
    x = 12,526,456.47/3,899.20
  6. Step 6: Final answer
    x = 3,212.57

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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.