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Finding the Fourth Proportional to 7,938.41, 11,906.60 and 2,672.60

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Solution

The fourth proportional to 7,938.41, 11,906.60 and 2,672.60 is: 4,008.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.41 : 11,906.60 = 2,672.60 : x
  2. Step 2: Convert to fraction form
    7,938.41/11,906.60 = 2,672.60/x
  3. Step 3: Cross multiply
    7,938.41x = 11,906.60 × 2,672.60
  4. Step 4: Simplify right side
    7,938.41x = 31,821,506.26
  5. Step 5: Solve for x
    x = 31,821,506.26/7,938.41
  6. Step 6: Final answer
    x = 4,008.55

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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.