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Finding the Fourth Proportional to 8,070.44, 12,107.82 and 3,912.44

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Solution

The fourth proportional to 8,070.44, 12,107.82 and 3,912.44 is: 5,869.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,070.44 : 12,107.82 = 3,912.44 : x
  2. Step 2: Convert to fraction form
    8,070.44/12,107.82 = 3,912.44/x
  3. Step 3: Cross multiply
    8,070.44x = 12,107.82 × 3,912.44
  4. Step 4: Simplify right side
    8,070.44x = 47,371,119.28
  5. Step 5: Solve for x
    x = 47,371,119.28/8,070.44
  6. Step 6: Final answer
    x = 5,869.71

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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.