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Finding the Fourth Proportional to 6,383.91, 8,809.11 and 3,550.83

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Solution

The fourth proportional to 6,383.91, 8,809.11 and 3,550.83 is: 4,899.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,383.91 : 8,809.11 = 3,550.83 : x
  2. Step 2: Convert to fraction form
    6,383.91/8,809.11 = 3,550.83/x
  3. Step 3: Cross multiply
    6,383.91x = 8,809.11 × 3,550.83
  4. Step 4: Simplify right side
    6,383.91x = 31,279,652.06
  5. Step 5: Solve for x
    x = 31,279,652.06/6,383.91
  6. Step 6: Final answer
    x = 4,899.76

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Half scale
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Double scale
Find fourth proportional to 6,384.91, 8,810.49 and 3,551.83
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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.