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Finding the Fourth Proportional to 3,908.28, 5,862.43 and 2,922.11

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Solution

The fourth proportional to 3,908.28, 5,862.43 and 2,922.11 is: 4,383.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.28 : 5,862.43 = 2,922.11 : x
  2. Step 2: Convert to fraction form
    3,908.28/5,862.43 = 2,922.11/x
  3. Step 3: Cross multiply
    3,908.28x = 5,862.43 × 2,922.11
  4. Step 4: Simplify right side
    3,908.28x = 17,130,645.22
  5. Step 5: Solve for x
    x = 17,130,645.22/3,908.28
  6. Step 6: Final answer
    x = 4,383.16

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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.