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Finding the Fourth Proportional to 5,267.15, 7,269.15 and 3,938.55

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Solution

The fourth proportional to 5,267.15, 7,269.15 and 3,938.55 is: 5,435.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,267.15 : 7,269.15 = 3,938.55 : x
  2. Step 2: Convert to fraction form
    5,267.15/7,269.15 = 3,938.55/x
  3. Step 3: Cross multiply
    5,267.15x = 7,269.15 × 3,938.55
  4. Step 4: Simplify right side
    5,267.15x = 28,629,910.73
  5. Step 5: Solve for x
    x = 28,629,910.73/5,267.15
  6. Step 6: Final answer
    x = 5,435.56

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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.