Home / 5,279.60-7,286.28-2,921.96

Finding the Fourth Proportional to 5,279.60, 7,286.28 and 2,921.96

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Solution

The fourth proportional to 5,279.60, 7,286.28 and 2,921.96 is: 4,032.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.60 : 7,286.28 = 2,921.96 : x
  2. Step 2: Convert to fraction form
    5,279.60/7,286.28 = 2,921.96/x
  3. Step 3: Cross multiply
    5,279.60x = 7,286.28 × 2,921.96
  4. Step 4: Simplify right side
    5,279.60x = 21,290,218.71
  5. Step 5: Solve for x
    x = 21,290,218.71/5,279.60
  6. Step 6: Final answer
    x = 4,032.54

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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.