Home / 3,928.67-5,421.68-2,250.62

Finding the Fourth Proportional to 3,928.67, 5,421.68 and 2,250.62

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Solution

The fourth proportional to 3,928.67, 5,421.68 and 2,250.62 is: 3,105.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.67 : 5,421.68 = 2,250.62 : x
  2. Step 2: Convert to fraction form
    3,928.67/5,421.68 = 2,250.62/x
  3. Step 3: Cross multiply
    3,928.67x = 5,421.68 × 2,250.62
  4. Step 4: Simplify right side
    3,928.67x = 12,202,103.08
  5. Step 5: Solve for x
    x = 12,202,103.08/3,928.67
  6. Step 6: Final answer
    x = 3,105.92

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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.