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Finding the Fourth Proportional to 8,482.56, 12,724.32 and 2,639.04

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Solution

The fourth proportional to 8,482.56, 12,724.32 and 2,639.04 is: 3,958.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,482.56 : 12,724.32 = 2,639.04 : x
  2. Step 2: Convert to fraction form
    8,482.56/12,724.32 = 2,639.04/x
  3. Step 3: Cross multiply
    8,482.56x = 12,724.32 × 2,639.04
  4. Step 4: Simplify right side
    8,482.56x = 33,579,989.45
  5. Step 5: Solve for x
    x = 33,579,989.45/8,482.56
  6. Step 6: Final answer
    x = 3,958.71

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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.