Home / 3,819.18-5,727.42-1,221.42

Finding the Fourth Proportional to 3,819.18, 5,727.42 and 1,221.42

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Solution

The fourth proportional to 3,819.18, 5,727.42 and 1,221.42 is: 1,831.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.18 : 5,727.42 = 1,221.42 : x
  2. Step 2: Convert to fraction form
    3,819.18/5,727.42 = 1,221.42/x
  3. Step 3: Cross multiply
    3,819.18x = 5,727.42 × 1,221.42
  4. Step 4: Simplify right side
    3,819.18x = 6,995,585.34
  5. Step 5: Solve for x
    x = 6,995,585.34/3,819.18
  6. Step 6: Final answer
    x = 1,831.70

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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.