Home / 3,928.66-5,421.78-2,250.59

Finding the Fourth Proportional to 3,928.66, 5,421.78 and 2,250.59

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Solution

The fourth proportional to 3,928.66, 5,421.78 and 2,250.59 is: 3,105.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.66 : 5,421.78 = 2,250.59 : x
  2. Step 2: Convert to fraction form
    3,928.66/5,421.78 = 2,250.59/x
  3. Step 3: Cross multiply
    3,928.66x = 5,421.78 × 2,250.59
  4. Step 4: Simplify right side
    3,928.66x = 12,202,176.74
  5. Step 5: Solve for x
    x = 12,202,176.74/3,928.66
  6. Step 6: Final answer
    x = 3,105.94

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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.