Home / 5,279.28-7,286.31-3,040.76

Finding the Fourth Proportional to 5,279.28, 7,286.31 and 3,040.76

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Solution

The fourth proportional to 5,279.28, 7,286.31 and 3,040.76 is: 4,196.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.28 : 7,286.31 = 3,040.76 : x
  2. Step 2: Convert to fraction form
    5,279.28/7,286.31 = 3,040.76/x
  3. Step 3: Cross multiply
    5,279.28x = 7,286.31 × 3,040.76
  4. Step 4: Simplify right side
    5,279.28x = 22,155,883.56
  5. Step 5: Solve for x
    x = 22,155,883.56/5,279.28
  6. Step 6: Final answer
    x = 4,196.76

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Double scale
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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.