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Finding the Fourth Proportional to 7,480.77, 11,221.16 and 2,286.65

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Solution

The fourth proportional to 7,480.77, 11,221.16 and 2,286.65 is: 3,429.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,480.77 : 11,221.16 = 2,286.65 : x
  2. Step 2: Convert to fraction form
    7,480.77/11,221.16 = 2,286.65/x
  3. Step 3: Cross multiply
    7,480.77x = 11,221.16 × 2,286.65
  4. Step 4: Simplify right side
    7,480.77x = 25,658,797.97
  5. Step 5: Solve for x
    x = 25,658,797.97/7,480.77
  6. Step 6: Final answer
    x = 3,429.97

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.