Home / 3,928.56-5,421.36-2,249.88

Finding the Fourth Proportional to 3,928.56, 5,421.36 and 2,249.88

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Solution

The fourth proportional to 3,928.56, 5,421.36 and 2,249.88 is: 3,104.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.56 : 5,421.36 = 2,249.88 : x
  2. Step 2: Convert to fraction form
    3,928.56/5,421.36 = 2,249.88/x
  3. Step 3: Cross multiply
    3,928.56x = 5,421.36 × 2,249.88
  4. Step 4: Simplify right side
    3,928.56x = 12,197,409.44
  5. Step 5: Solve for x
    x = 12,197,409.44/3,928.56
  6. Step 6: Final answer
    x = 3,104.80

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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.