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Finding the Fourth Proportional to 3,960.68, 5,915.17 and 3,369.38

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Solution

The fourth proportional to 3,960.68, 5,915.17 and 3,369.38 is: 5,032.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.68 : 5,915.17 = 3,369.38 : x
  2. Step 2: Convert to fraction form
    3,960.68/5,915.17 = 3,369.38/x
  3. Step 3: Cross multiply
    3,960.68x = 5,915.17 × 3,369.38
  4. Step 4: Simplify right side
    3,960.68x = 19,930,455.49
  5. Step 5: Solve for x
    x = 19,930,455.49/3,960.68
  6. Step 6: Final answer
    x = 5,032.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.