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Finding the Fourth Proportional to 8,290.48, 12,496.60 and 8,173.84

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Solution

The fourth proportional to 8,290.48, 12,496.60 and 8,173.84 is: 12,320.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.48 : 12,496.60 = 8,173.84 : x
  2. Step 2: Convert to fraction form
    8,290.48/12,496.60 = 8,173.84/x
  3. Step 3: Cross multiply
    8,290.48x = 12,496.60 × 8,173.84
  4. Step 4: Simplify right side
    8,290.48x = 102,145,208.94
  5. Step 5: Solve for x
    x = 102,145,208.94/8,290.48
  6. Step 6: Final answer
    x = 12,320.78

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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.