Home / 3,818.62-5,727.94-1,221.76

Finding the Fourth Proportional to 3,818.62, 5,727.94 and 1,221.76

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Solution

The fourth proportional to 3,818.62, 5,727.94 and 1,221.76 is: 1,832.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.62 : 5,727.94 = 1,221.76 : x
  2. Step 2: Convert to fraction form
    3,818.62/5,727.94 = 1,221.76/x
  3. Step 3: Cross multiply
    3,818.62x = 5,727.94 × 1,221.76
  4. Step 4: Simplify right side
    3,818.62x = 6,998,167.97
  5. Step 5: Solve for x
    x = 6,998,167.97/3,818.62
  6. Step 6: Final answer
    x = 1,832.64

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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.