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Finding the Fourth Proportional to 8,097.64, 12,141.60 and 3,929.44

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Solution

The fourth proportional to 8,097.64, 12,141.60 and 3,929.44 is: 5,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,097.64 : 12,141.60 = 3,929.44 : x
  2. Step 2: Convert to fraction form
    8,097.64/12,141.60 = 3,929.44/x
  3. Step 3: Cross multiply
    8,097.64x = 12,141.60 × 3,929.44
  4. Step 4: Simplify right side
    8,097.64x = 47,709,688.70
  5. Step 5: Solve for x
    x = 47,709,688.70/8,097.64
  6. Step 6: Final answer
    x = 5,891.80

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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.