Home / 3,818.25-5,727.38-1,221.39

Finding the Fourth Proportional to 3,818.25, 5,727.38 and 1,221.39

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Solution

The fourth proportional to 3,818.25, 5,727.38 and 1,221.39 is: 1,832.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.25 : 5,727.38 = 1,221.39 : x
  2. Step 2: Convert to fraction form
    3,818.25/5,727.38 = 1,221.39/x
  3. Step 3: Cross multiply
    3,818.25x = 5,727.38 × 1,221.39
  4. Step 4: Simplify right side
    3,818.25x = 6,995,358.55
  5. Step 5: Solve for x
    x = 6,995,358.55/3,818.25
  6. Step 6: Final answer
    x = 1,832.09

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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.