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Finding the Fourth Proportional to 3,930.62, 5,895.99 and 3,146.99

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Solution

The fourth proportional to 3,930.62, 5,895.99 and 3,146.99 is: 4,720.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.62 : 5,895.99 = 3,146.99 : x
  2. Step 2: Convert to fraction form
    3,930.62/5,895.99 = 3,146.99/x
  3. Step 3: Cross multiply
    3,930.62x = 5,895.99 × 3,146.99
  4. Step 4: Simplify right side
    3,930.62x = 18,554,592.09
  5. Step 5: Solve for x
    x = 18,554,592.09/3,930.62
  6. Step 6: Final answer
    x = 4,720.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.