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Finding the Fourth Proportional to 8,224.60, 11,351 and 4,687.80

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Solution

The fourth proportional to 8,224.60, 11,351 and 4,687.80 is: 6,469.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,224.60 : 11,351 = 4,687.80 : x
  2. Step 2: Convert to fraction form
    8,224.60/11,351 = 4,687.80/x
  3. Step 3: Cross multiply
    8,224.60x = 11,351 × 4,687.80
  4. Step 4: Simplify right side
    8,224.60x = 53,211,217.80
  5. Step 5: Solve for x
    x = 53,211,217.80/8,224.60
  6. Step 6: Final answer
    x = 6,469.76

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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.