Home / 7,789.93-11,684.89-2,857.70

Finding the Fourth Proportional to 7,789.93, 11,684.89 and 2,857.70

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Solution

The fourth proportional to 7,789.93, 11,684.89 and 2,857.70 is: 4,286.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.93 : 11,684.89 = 2,857.70 : x
  2. Step 2: Convert to fraction form
    7,789.93/11,684.89 = 2,857.70/x
  3. Step 3: Cross multiply
    7,789.93x = 11,684.89 × 2,857.70
  4. Step 4: Simplify right side
    7,789.93x = 33,391,942.94
  5. Step 5: Solve for x
    x = 33,391,942.94/7,789.93
  6. Step 6: Final answer
    x = 4,286.55

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Double scale
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Similar ratio
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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.