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Finding the Fourth Proportional to 8,482.44, 12,724.28 and 2,639.44

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Solution

The fourth proportional to 8,482.44, 12,724.28 and 2,639.44 is: 3,959.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,482.44 : 12,724.28 = 2,639.44 : x
  2. Step 2: Convert to fraction form
    8,482.44/12,724.28 = 2,639.44/x
  3. Step 3: Cross multiply
    8,482.44x = 12,724.28 × 2,639.44
  4. Step 4: Simplify right side
    8,482.44x = 33,584,973.60
  5. Step 5: Solve for x
    x = 33,584,973.60/8,482.44
  6. Step 6: Final answer
    x = 3,959.35

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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.