Home / 8,311.07-11,467.61-5,287.39

Finding the Fourth Proportional to 8,311.07, 11,467.61 and 5,287.39

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Solution

The fourth proportional to 8,311.07, 11,467.61 and 5,287.39 is: 7,295.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,311.07 : 11,467.61 = 5,287.39 : x
  2. Step 2: Convert to fraction form
    8,311.07/11,467.61 = 5,287.39/x
  3. Step 3: Cross multiply
    8,311.07x = 11,467.61 × 5,287.39
  4. Step 4: Simplify right side
    8,311.07x = 60,633,755.66
  5. Step 5: Solve for x
    x = 60,633,755.66/8,311.07
  6. Step 6: Final answer
    x = 7,295.54

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Half scale
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Double scale
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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.