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Finding the Fourth Proportional to 3,799.92, 5,243.85 and 2,143.92

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Solution

The fourth proportional to 3,799.92, 5,243.85 and 2,143.92 is: 2,958.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,799.92 : 5,243.85 = 2,143.92 : x
  2. Step 2: Convert to fraction form
    3,799.92/5,243.85 = 2,143.92/x
  3. Step 3: Cross multiply
    3,799.92x = 5,243.85 × 2,143.92
  4. Step 4: Simplify right side
    3,799.92x = 11,242,394.89
  5. Step 5: Solve for x
    x = 11,242,394.89/3,799.92
  6. Step 6: Final answer
    x = 2,958.59

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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.