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Finding the Fourth Proportional to 6,147.87, 8,481.56 and 4,285.95

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Solution

The fourth proportional to 6,147.87, 8,481.56 and 4,285.95 is: 5,912.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,147.87 : 8,481.56 = 4,285.95 : x
  2. Step 2: Convert to fraction form
    6,147.87/8,481.56 = 4,285.95/x
  3. Step 3: Cross multiply
    6,147.87x = 8,481.56 × 4,285.95
  4. Step 4: Simplify right side
    6,147.87x = 36,351,520.65
  5. Step 5: Solve for x
    x = 36,351,520.65/6,147.87
  6. Step 6: Final answer
    x = 5,912.86

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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.