Home / 8,105.34-11,185.37-4,379.34

Finding the Fourth Proportional to 8,105.34, 11,185.37 and 4,379.34

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Solution

The fourth proportional to 8,105.34, 11,185.37 and 4,379.34 is: 6,043.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.34 : 11,185.37 = 4,379.34 : x
  2. Step 2: Convert to fraction form
    8,105.34/11,185.37 = 4,379.34/x
  3. Step 3: Cross multiply
    8,105.34x = 11,185.37 × 4,379.34
  4. Step 4: Simplify right side
    8,105.34x = 48,984,599.36
  5. Step 5: Solve for x
    x = 48,984,599.36/8,105.34
  6. Step 6: Final answer
    x = 6,043.49

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Half scale
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Double scale
Find fourth proportional to 8,106.34, 11,186.75 and 4,380.34
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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.