Home / 8,212.10-11,336.36-5,231.97

Finding the Fourth Proportional to 8,212.10, 11,336.36 and 5,231.97

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Solution

The fourth proportional to 8,212.10, 11,336.36 and 5,231.97 is: 7,222.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.10 : 11,336.36 = 5,231.97 : x
  2. Step 2: Convert to fraction form
    8,212.10/11,336.36 = 5,231.97/x
  3. Step 3: Cross multiply
    8,212.10x = 11,336.36 × 5,231.97
  4. Step 4: Simplify right side
    8,212.10x = 59,311,469.27
  5. Step 5: Solve for x
    x = 59,311,469.27/8,212.10
  6. Step 6: Final answer
    x = 7,222.45

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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.