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Finding the Fourth Proportional to 3,170.44, 4,755.66 and 862.28

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Solution

The fourth proportional to 3,170.44, 4,755.66 and 862.28 is: 1,293.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.44 : 4,755.66 = 862.28 : x
  2. Step 2: Convert to fraction form
    3,170.44/4,755.66 = 862.28/x
  3. Step 3: Cross multiply
    3,170.44x = 4,755.66 × 862.28
  4. Step 4: Simplify right side
    3,170.44x = 4,100,710.50
  5. Step 5: Solve for x
    x = 4,100,710.50/3,170.44
  6. Step 6: Final answer
    x = 1,293.42

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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.