Home / 5,279.76-7,286.22-2,921.85

Finding the Fourth Proportional to 5,279.76, 7,286.22 and 2,921.85

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Solution

The fourth proportional to 5,279.76, 7,286.22 and 2,921.85 is: 4,032.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.76 : 7,286.22 = 2,921.85 : x
  2. Step 2: Convert to fraction form
    5,279.76/7,286.22 = 2,921.85/x
  3. Step 3: Cross multiply
    5,279.76x = 7,286.22 × 2,921.85
  4. Step 4: Simplify right side
    5,279.76x = 21,289,241.91
  5. Step 5: Solve for x
    x = 21,289,241.91/5,279.76
  6. Step 6: Final answer
    x = 4,032.24

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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.