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Finding the Fourth Proportional to 5,571.56, 7,691.62 and 3,806.44

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Solution

The fourth proportional to 5,571.56, 7,691.62 and 3,806.44 is: 5,254.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,571.56 : 7,691.62 = 3,806.44 : x
  2. Step 2: Convert to fraction form
    5,571.56/7,691.62 = 3,806.44/x
  3. Step 3: Cross multiply
    5,571.56x = 7,691.62 × 3,806.44
  4. Step 4: Simplify right side
    5,571.56x = 29,277,690.03
  5. Step 5: Solve for x
    x = 29,277,690.03/5,571.56
  6. Step 6: Final answer
    x = 5,254.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.