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Finding the Fourth Proportional to 2,740.73, 4,111.10 and 892.03

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Solution

The fourth proportional to 2,740.73, 4,111.10 and 892.03 is: 1,338.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.73 : 4,111.10 = 892.03 : x
  2. Step 2: Convert to fraction form
    2,740.73/4,111.10 = 892.03/x
  3. Step 3: Cross multiply
    2,740.73x = 4,111.10 × 892.03
  4. Step 4: Simplify right side
    2,740.73x = 3,667,220.07
  5. Step 5: Solve for x
    x = 3,667,220.07/2,740.73
  6. Step 6: Final answer
    x = 1,338.05

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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.