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Finding the Fourth Proportional to 2,790.94, 3,853.02 and 1,908.04

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Solution

The fourth proportional to 2,790.94, 3,853.02 and 1,908.04 is: 2,634.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.94 : 3,853.02 = 1,908.04 : x
  2. Step 2: Convert to fraction form
    2,790.94/3,853.02 = 1,908.04/x
  3. Step 3: Cross multiply
    2,790.94x = 3,853.02 × 1,908.04
  4. Step 4: Simplify right side
    2,790.94x = 7,351,716.28
  5. Step 5: Solve for x
    x = 7,351,716.28/2,790.94
  6. Step 6: Final answer
    x = 2,634.14

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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.