Home / 2,683.20-4,023.60-1,221.60

Finding the Fourth Proportional to 2,683.20, 4,023.60 and 1,221.60

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Solution

The fourth proportional to 2,683.20, 4,023.60 and 1,221.60 is: 1,831.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,683.20 : 4,023.60 = 1,221.60 : x
  2. Step 2: Convert to fraction form
    2,683.20/4,023.60 = 1,221.60/x
  3. Step 3: Cross multiply
    2,683.20x = 4,023.60 × 1,221.60
  4. Step 4: Simplify right side
    2,683.20x = 4,915,229.76
  5. Step 5: Solve for x
    x = 4,915,229.76/2,683.20
  6. Step 6: Final answer
    x = 1,831.85

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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.