Home / 7,986.78-11,021.94-4,450.21

Finding the Fourth Proportional to 7,986.78, 11,021.94 and 4,450.21

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Solution

The fourth proportional to 7,986.78, 11,021.94 and 4,450.21 is: 6,141.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.78 : 11,021.94 = 4,450.21 : x
  2. Step 2: Convert to fraction form
    7,986.78/11,021.94 = 4,450.21/x
  3. Step 3: Cross multiply
    7,986.78x = 11,021.94 × 4,450.21
  4. Step 4: Simplify right side
    7,986.78x = 49,049,920.05
  5. Step 5: Solve for x
    x = 49,049,920.05/7,986.78
  6. Step 6: Final answer
    x = 6,141.39

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Similar ratio
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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.