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Finding the Fourth Proportional to 5,571.90, 7,691.90 and 4,451.67

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Solution

The fourth proportional to 5,571.90, 7,691.90 and 4,451.67 is: 6,145.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,571.90 : 7,691.90 = 4,451.67 : x
  2. Step 2: Convert to fraction form
    5,571.90/7,691.90 = 4,451.67/x
  3. Step 3: Cross multiply
    5,571.90x = 7,691.90 × 4,451.67
  4. Step 4: Simplify right side
    5,571.90x = 34,241,778.21
  5. Step 5: Solve for x
    x = 34,241,778.21/5,571.90
  6. Step 6: Final answer
    x = 6,145.44

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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.