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Finding the Fourth Proportional to 3,375.81, 4,654.78 and 2,843.91

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Solution

The fourth proportional to 3,375.81, 4,654.78 and 2,843.91 is: 3,921.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,375.81 : 4,654.78 = 2,843.91 : x
  2. Step 2: Convert to fraction form
    3,375.81/4,654.78 = 2,843.91/x
  3. Step 3: Cross multiply
    3,375.81x = 4,654.78 × 2,843.91
  4. Step 4: Simplify right side
    3,375.81x = 13,237,768.28
  5. Step 5: Solve for x
    x = 13,237,768.28/3,375.81
  6. Step 6: Final answer
    x = 3,921.36

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1.5x scale

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.