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Finding the Fourth Proportional to 6,685.84, 9,230.97 and 4,171.78

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Solution

The fourth proportional to 6,685.84, 9,230.97 and 4,171.78 is: 5,759.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,685.84 : 9,230.97 = 4,171.78 : x
  2. Step 2: Convert to fraction form
    6,685.84/9,230.97 = 4,171.78/x
  3. Step 3: Cross multiply
    6,685.84x = 9,230.97 × 4,171.78
  4. Step 4: Simplify right side
    6,685.84x = 38,509,576.03
  5. Step 5: Solve for x
    x = 38,509,576.03/6,685.84
  6. Step 6: Final answer
    x = 5,759.87

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Half scale
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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.