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Finding the Fourth Proportional to 2,852, 4,278.72 and 800

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Solution

The fourth proportional to 2,852, 4,278.72 and 800 is: 1,200.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,852 : 4,278.72 = 800 : x
  2. Step 2: Convert to fraction form
    2,852/4,278.72 = 800/x
  3. Step 3: Cross multiply
    2,852x = 4,278.72 × 800
  4. Step 4: Simplify right side
    2,852x = 3,422,976
  5. Step 5: Solve for x
    x = 3,422,976/2,852
  6. Step 6: Final answer
    x = 1,200.20

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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.