Home / 3,928.49-5,421.69-2,250.03

Finding the Fourth Proportional to 3,928.49, 5,421.69 and 2,250.03

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Solution

The fourth proportional to 3,928.49, 5,421.69 and 2,250.03 is: 3,105.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.49 : 5,421.69 = 2,250.03 : x
  2. Step 2: Convert to fraction form
    3,928.49/5,421.69 = 2,250.03/x
  3. Step 3: Cross multiply
    3,928.49x = 5,421.69 × 2,250.03
  4. Step 4: Simplify right side
    3,928.49x = 12,198,965.15
  5. Step 5: Solve for x
    x = 12,198,965.15/3,928.49
  6. Step 6: Final answer
    x = 3,105.26

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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.