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Finding the Fourth Proportional to 2,855.98, 3,941.28 and 1,661.03

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Solution

The fourth proportional to 2,855.98, 3,941.28 and 1,661.03 is: 2,292.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.98 : 3,941.28 = 1,661.03 : x
  2. Step 2: Convert to fraction form
    2,855.98/3,941.28 = 1,661.03/x
  3. Step 3: Cross multiply
    2,855.98x = 3,941.28 × 1,661.03
  4. Step 4: Simplify right side
    2,855.98x = 6,546,556.31
  5. Step 5: Solve for x
    x = 6,546,556.31/2,855.98
  6. Step 6: Final answer
    x = 2,292.23

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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.