Home / 3,219.60-4,443.50-2,040.78

Finding the Fourth Proportional to 3,219.60, 4,443.50 and 2,040.78

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Solution

The fourth proportional to 3,219.60, 4,443.50 and 2,040.78 is: 2,816.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.60 : 4,443.50 = 2,040.78 : x
  2. Step 2: Convert to fraction form
    3,219.60/4,443.50 = 2,040.78/x
  3. Step 3: Cross multiply
    3,219.60x = 4,443.50 × 2,040.78
  4. Step 4: Simplify right side
    3,219.60x = 9,068,195.73
  5. Step 5: Solve for x
    x = 9,068,195.73/3,219.60
  6. Step 6: Final answer
    x = 2,816.56

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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.