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Finding the Fourth Proportional to 8,480.62, 12,721.33 and 6,997.09

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Solution

The fourth proportional to 8,480.62, 12,721.33 and 6,997.09 is: 10,495.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.62 : 12,721.33 = 6,997.09 : x
  2. Step 2: Convert to fraction form
    8,480.62/12,721.33 = 6,997.09/x
  3. Step 3: Cross multiply
    8,480.62x = 12,721.33 × 6,997.09
  4. Step 4: Simplify right side
    8,480.62x = 89,012,252.37
  5. Step 5: Solve for x
    x = 89,012,252.37/8,480.62
  6. Step 6: Final answer
    x = 10,495.96

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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.