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Finding the Fourth Proportional to 5,791.12, 8,684.90 and 2,092.88

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Solution

The fourth proportional to 5,791.12, 8,684.90 and 2,092.88 is: 3,138.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791.12 : 8,684.90 = 2,092.88 : x
  2. Step 2: Convert to fraction form
    5,791.12/8,684.90 = 2,092.88/x
  3. Step 3: Cross multiply
    5,791.12x = 8,684.90 × 2,092.88
  4. Step 4: Simplify right side
    5,791.12x = 18,176,453.51
  5. Step 5: Solve for x
    x = 18,176,453.51/5,791.12
  6. Step 6: Final answer
    x = 3,138.68

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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.