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Finding the Fourth Proportional to 4,286.67, 6,429.99 and 2,815.18

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Solution

The fourth proportional to 4,286.67, 6,429.99 and 2,815.18 is: 4,222.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,286.67 : 6,429.99 = 2,815.18 : x
  2. Step 2: Convert to fraction form
    4,286.67/6,429.99 = 2,815.18/x
  3. Step 3: Cross multiply
    4,286.67x = 6,429.99 × 2,815.18
  4. Step 4: Simplify right side
    4,286.67x = 18,101,573.73
  5. Step 5: Solve for x
    x = 18,101,573.73/4,286.67
  6. Step 6: Final answer
    x = 4,222.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.