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Finding the Fourth Proportional to 8,259.97, 12,389.80 and 3,329.48

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Solution

The fourth proportional to 8,259.97, 12,389.80 and 3,329.48 is: 4,994.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,259.97 : 12,389.80 = 3,329.48 : x
  2. Step 2: Convert to fraction form
    8,259.97/12,389.80 = 3,329.48/x
  3. Step 3: Cross multiply
    8,259.97x = 12,389.80 × 3,329.48
  4. Step 4: Simplify right side
    8,259.97x = 41,251,591.30
  5. Step 5: Solve for x
    x = 41,251,591.30/8,259.97
  6. Step 6: Final answer
    x = 4,994.16

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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.