Home / 5,248.70-7,249.56-3,928.28

Finding the Fourth Proportional to 5,248.70, 7,249.56 and 3,928.28

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Solution

The fourth proportional to 5,248.70, 7,249.56 and 3,928.28 is: 5,425.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,248.70 : 7,249.56 = 3,928.28 : x
  2. Step 2: Convert to fraction form
    5,248.70/7,249.56 = 3,928.28/x
  3. Step 3: Cross multiply
    5,248.70x = 7,249.56 × 3,928.28
  4. Step 4: Simplify right side
    5,248.70x = 28,478,301.56
  5. Step 5: Solve for x
    x = 28,478,301.56/5,248.70
  6. Step 6: Final answer
    x = 5,425.78

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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.