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Finding the Fourth Proportional to 8,480.35, 12,720.39 and 2,636.97

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Solution

The fourth proportional to 8,480.35, 12,720.39 and 2,636.97 is: 3,955.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.35 : 12,720.39 = 2,636.97 : x
  2. Step 2: Convert to fraction form
    8,480.35/12,720.39 = 2,636.97/x
  3. Step 3: Cross multiply
    8,480.35x = 12,720.39 × 2,636.97
  4. Step 4: Simplify right side
    8,480.35x = 33,543,286.82
  5. Step 5: Solve for x
    x = 33,543,286.82/8,480.35
  6. Step 6: Final answer
    x = 3,955.41

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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.