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Finding the Fourth Proportional to 2,938.87, 4,056.03 and 1,893.97

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Solution

The fourth proportional to 2,938.87, 4,056.03 and 1,893.97 is: 2,613.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.87 : 4,056.03 = 1,893.97 : x
  2. Step 2: Convert to fraction form
    2,938.87/4,056.03 = 1,893.97/x
  3. Step 3: Cross multiply
    2,938.87x = 4,056.03 × 1,893.97
  4. Step 4: Simplify right side
    2,938.87x = 7,681,999.14
  5. Step 5: Solve for x
    x = 7,681,999.14/2,938.87
  6. Step 6: Final answer
    x = 2,613.93

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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.