Home / 3,199.40-4,415.70-2,022.20

Finding the Fourth Proportional to 3,199.40, 4,415.70 and 2,022.20

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Solution

The fourth proportional to 3,199.40, 4,415.70 and 2,022.20 is: 2,790.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,199.40 : 4,415.70 = 2,022.20 : x
  2. Step 2: Convert to fraction form
    3,199.40/4,415.70 = 2,022.20/x
  3. Step 3: Cross multiply
    3,199.40x = 4,415.70 × 2,022.20
  4. Step 4: Simplify right side
    3,199.40x = 8,929,428.54
  5. Step 5: Solve for x
    x = 8,929,428.54/3,199.40
  6. Step 6: Final answer
    x = 2,790.97

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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.