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Finding the Fourth Proportional to 8,480.39, 12,727.40 and 4,786.18

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Solution

The fourth proportional to 8,480.39, 12,727.40 and 4,786.18 is: 7,183.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.39 : 12,727.40 = 4,786.18 : x
  2. Step 2: Convert to fraction form
    8,480.39/12,727.40 = 4,786.18/x
  3. Step 3: Cross multiply
    8,480.39x = 12,727.40 × 4,786.18
  4. Step 4: Simplify right side
    8,480.39x = 60,915,571.58
  5. Step 5: Solve for x
    x = 60,915,571.58/8,480.39
  6. Step 6: Final answer
    x = 7,183.11

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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.