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Finding the Fourth Proportional to 5,279.76, 7,286.22 and 2,922.12

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Solution

The fourth proportional to 5,279.76, 7,286.22 and 2,922.12 is: 4,032.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.76 : 7,286.22 = 2,922.12 : x
  2. Step 2: Convert to fraction form
    5,279.76/7,286.22 = 2,922.12/x
  3. Step 3: Cross multiply
    5,279.76x = 7,286.22 × 2,922.12
  4. Step 4: Simplify right side
    5,279.76x = 21,291,209.19
  5. Step 5: Solve for x
    x = 21,291,209.19/5,279.76
  6. Step 6: Final answer
    x = 4,032.61

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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.