Home / 9,286.86-12,815.94-5,198.70

Finding the Fourth Proportional to 9,286.86, 12,815.94 and 5,198.70

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Solution

The fourth proportional to 9,286.86, 12,815.94 and 5,198.70 is: 7,174.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,286.86 : 12,815.94 = 5,198.70 : x
  2. Step 2: Convert to fraction form
    9,286.86/12,815.94 = 5,198.70/x
  3. Step 3: Cross multiply
    9,286.86x = 12,815.94 × 5,198.70
  4. Step 4: Simplify right side
    9,286.86x = 66,626,227.28
  5. Step 5: Solve for x
    x = 66,626,227.28/9,286.86
  6. Step 6: Final answer
    x = 7,174.25

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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.