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Finding the Fourth Proportional to 8,269.82, 12,459.88 and 7,480.09

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Solution

The fourth proportional to 8,269.82, 12,459.88 and 7,480.09 is: 11,270.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,269.82 : 12,459.88 = 7,480.09 : x
  2. Step 2: Convert to fraction form
    8,269.82/12,459.88 = 7,480.09/x
  3. Step 3: Cross multiply
    8,269.82x = 12,459.88 × 7,480.09
  4. Step 4: Simplify right side
    8,269.82x = 93,200,961.49
  5. Step 5: Solve for x
    x = 93,200,961.49/8,269.82
  6. Step 6: Final answer
    x = 11,270.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.