Home / 3,231.75-4,421.67-3,219.60

Finding the Fourth Proportional to 3,231.75, 4,421.67 and 3,219.60

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Solution

The fourth proportional to 3,231.75, 4,421.67 and 3,219.60 is: 4,405.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.75 : 4,421.67 = 3,219.60 : x
  2. Step 2: Convert to fraction form
    3,231.75/4,421.67 = 3,219.60/x
  3. Step 3: Cross multiply
    3,231.75x = 4,421.67 × 3,219.60
  4. Step 4: Simplify right side
    3,231.75x = 14,236,008.73
  5. Step 5: Solve for x
    x = 14,236,008.73/3,231.75
  6. Step 6: Final answer
    x = 4,405.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.