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Finding the Fourth Proportional to 6,383.84, 8,809.91 and 3,866.42

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Solution

The fourth proportional to 6,383.84, 8,809.91 and 3,866.42 is: 5,335.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,383.84 : 8,809.91 = 3,866.42 : x
  2. Step 2: Convert to fraction form
    6,383.84/8,809.91 = 3,866.42/x
  3. Step 3: Cross multiply
    6,383.84x = 8,809.91 × 3,866.42
  4. Step 4: Simplify right side
    6,383.84x = 34,062,812.22
  5. Step 5: Solve for x
    x = 34,062,812.22/6,383.84
  6. Step 6: Final answer
    x = 5,335.79

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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.