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Finding the Fourth Proportional to 7,480.61, 11,220.91 and 2,286.44

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Solution

The fourth proportional to 7,480.61, 11,220.91 and 2,286.44 is: 3,429.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,480.61 : 11,220.91 = 2,286.44 : x
  2. Step 2: Convert to fraction form
    7,480.61/11,220.91 = 2,286.44/x
  3. Step 3: Cross multiply
    7,480.61x = 11,220.91 × 2,286.44
  4. Step 4: Simplify right side
    7,480.61x = 25,655,875.64
  5. Step 5: Solve for x
    x = 25,655,875.64/7,480.61
  6. Step 6: Final answer
    x = 3,429.65

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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.