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Finding the Fourth Proportional to 2,853, 4,279.66 and 801.16

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Solution

The fourth proportional to 2,853, 4,279.66 and 801.16 is: 1,201.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853 : 4,279.66 = 801.16 : x
  2. Step 2: Convert to fraction form
    2,853/4,279.66 = 801.16/x
  3. Step 3: Cross multiply
    2,853x = 4,279.66 × 801.16
  4. Step 4: Simplify right side
    2,853x = 3,428,692.41
  5. Step 5: Solve for x
    x = 3,428,692.41/2,853
  6. Step 6: Final answer
    x = 1,201.78

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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.