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Finding the Fourth Proportional to 3,012.78, 4,518.45 and 1,163.22

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Solution

The fourth proportional to 3,012.78, 4,518.45 and 1,163.22 is: 1,744.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012.78 : 4,518.45 = 1,163.22 : x
  2. Step 2: Convert to fraction form
    3,012.78/4,518.45 = 1,163.22/x
  3. Step 3: Cross multiply
    3,012.78x = 4,518.45 × 1,163.22
  4. Step 4: Simplify right side
    3,012.78x = 5,255,951.41
  5. Step 5: Solve for x
    x = 5,255,951.41/3,012.78
  6. Step 6: Final answer
    x = 1,744.55

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1.5x scale

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.