Home / 7,758.39-11,636.78-2,211.38

Finding the Fourth Proportional to 7,758.39, 11,636.78 and 2,211.38

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Solution

The fourth proportional to 7,758.39, 11,636.78 and 2,211.38 is: 3,316.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,758.39 : 11,636.78 = 2,211.38 : x
  2. Step 2: Convert to fraction form
    7,758.39/11,636.78 = 2,211.38/x
  3. Step 3: Cross multiply
    7,758.39x = 11,636.78 × 2,211.38
  4. Step 4: Simplify right side
    7,758.39x = 25,733,273.32
  5. Step 5: Solve for x
    x = 25,733,273.32/7,758.39
  6. Step 6: Final answer
    x = 3,316.83

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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.