Home / 8,105.39-11,185.44-4,379.39

Finding the Fourth Proportional to 8,105.39, 11,185.44 and 4,379.39

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Solution

The fourth proportional to 8,105.39, 11,185.44 and 4,379.39 is: 6,043.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.39 : 11,185.44 = 4,379.39 : x
  2. Step 2: Convert to fraction form
    8,105.39/11,185.44 = 4,379.39/x
  3. Step 3: Cross multiply
    8,105.39x = 11,185.44 × 4,379.39
  4. Step 4: Simplify right side
    8,105.39x = 48,985,432.05
  5. Step 5: Solve for x
    x = 48,985,432.05/8,105.39
  6. Step 6: Final answer
    x = 6,043.56

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Half scale
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Double scale
Find fourth proportional to 8,106.39, 11,186.82 and 4,380.39
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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.