Home / 3,818.27-5,727.60-1,221

Finding the Fourth Proportional to 3,818.27, 5,727.60 and 1,221

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Solution

The fourth proportional to 3,818.27, 5,727.60 and 1,221 is: 1,831.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.27 : 5,727.60 = 1,221 : x
  2. Step 2: Convert to fraction form
    3,818.27/5,727.60 = 1,221/x
  3. Step 3: Cross multiply
    3,818.27x = 5,727.60 × 1,221
  4. Step 4: Simplify right side
    3,818.27x = 6,993,399.60
  5. Step 5: Solve for x
    x = 6,993,399.60/3,818.27
  6. Step 6: Final answer
    x = 1,831.56

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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.