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Finding the Fourth Proportional to 3,168.62, 4,750.86 and 1,221.02

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Solution

The fourth proportional to 3,168.62, 4,750.86 and 1,221.02 is: 1,830.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.62 : 4,750.86 = 1,221.02 : x
  2. Step 2: Convert to fraction form
    3,168.62/4,750.86 = 1,221.02/x
  3. Step 3: Cross multiply
    3,168.62x = 4,750.86 × 1,221.02
  4. Step 4: Simplify right side
    3,168.62x = 5,800,895.08
  5. Step 5: Solve for x
    x = 5,800,895.08/3,168.62
  6. Step 6: Final answer
    x = 1,830.73

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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.