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Finding the Fourth Proportional to 3,168.96, 4,754.10 and 1,221.72

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Solution

The fourth proportional to 3,168.96, 4,754.10 and 1,221.72 is: 1,832.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.96 : 4,754.10 = 1,221.72 : x
  2. Step 2: Convert to fraction form
    3,168.96/4,754.10 = 1,221.72/x
  3. Step 3: Cross multiply
    3,168.96x = 4,754.10 × 1,221.72
  4. Step 4: Simplify right side
    3,168.96x = 5,808,179.05
  5. Step 5: Solve for x
    x = 5,808,179.05/3,168.96
  6. Step 6: Final answer
    x = 1,832.83

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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.