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Finding the Fourth Proportional to 1,938.62, 2,906.94 and 949.96

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Solution

The fourth proportional to 1,938.62, 2,906.94 and 949.96 is: 1,424.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.62 : 2,906.94 = 949.96 : x
  2. Step 2: Convert to fraction form
    1,938.62/2,906.94 = 949.96/x
  3. Step 3: Cross multiply
    1,938.62x = 2,906.94 × 949.96
  4. Step 4: Simplify right side
    1,938.62x = 2,761,476.72
  5. Step 5: Solve for x
    x = 2,761,476.72/1,938.62
  6. Step 6: Final answer
    x = 1,424.45

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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.