Home / 3,245.22-4,480.20-1,986.60

Finding the Fourth Proportional to 3,245.22, 4,480.20 and 1,986.60

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Solution

The fourth proportional to 3,245.22, 4,480.20 and 1,986.60 is: 2,742.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,245.22 : 4,480.20 = 1,986.60 : x
  2. Step 2: Convert to fraction form
    3,245.22/4,480.20 = 1,986.60/x
  3. Step 3: Cross multiply
    3,245.22x = 4,480.20 × 1,986.60
  4. Step 4: Simplify right side
    3,245.22x = 8,900,365.32
  5. Step 5: Solve for x
    x = 8,900,365.32/3,245.22
  6. Step 6: Final answer
    x = 2,742.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.