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Finding the Fourth Proportional to 8,568.40, 12,852.96 and 2,724.40

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Solution

The fourth proportional to 8,568.40, 12,852.96 and 2,724.40 is: 4,086.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,568.40 : 12,852.96 = 2,724.40 : x
  2. Step 2: Convert to fraction form
    8,568.40/12,852.96 = 2,724.40/x
  3. Step 3: Cross multiply
    8,568.40x = 12,852.96 × 2,724.40
  4. Step 4: Simplify right side
    8,568.40x = 35,016,604.22
  5. Step 5: Solve for x
    x = 35,016,604.22/8,568.40
  6. Step 6: Final answer
    x = 4,086.71

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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.