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Finding the Fourth Proportional to 5,617.12, 7,749.11 and 3,257.89

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Solution

The fourth proportional to 5,617.12, 7,749.11 and 3,257.89 is: 4,494.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,617.12 : 7,749.11 = 3,257.89 : x
  2. Step 2: Convert to fraction form
    5,617.12/7,749.11 = 3,257.89/x
  3. Step 3: Cross multiply
    5,617.12x = 7,749.11 × 3,257.89
  4. Step 4: Simplify right side
    5,617.12x = 25,245,692.94
  5. Step 5: Solve for x
    x = 25,245,692.94/5,617.12
  6. Step 6: Final answer
    x = 4,494.42

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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.