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Finding the Fourth Proportional to 2,801, 4,201.42 and 852.92

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Solution

The fourth proportional to 2,801, 4,201.42 and 852.92 is: 1,279.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801 : 4,201.42 = 852.92 : x
  2. Step 2: Convert to fraction form
    2,801/4,201.42 = 852.92/x
  3. Step 3: Cross multiply
    2,801x = 4,201.42 × 852.92
  4. Step 4: Simplify right side
    2,801x = 3,583,475.15
  5. Step 5: Solve for x
    x = 3,583,475.15/2,801
  6. Step 6: Final answer
    x = 1,279.36

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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.