Home / 2,998.20-4,139.98-2,205.92

Finding the Fourth Proportional to 2,998.20, 4,139.98 and 2,205.92

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Solution

The fourth proportional to 2,998.20, 4,139.98 and 2,205.92 is: 3,045.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.20 : 4,139.98 = 2,205.92 : x
  2. Step 2: Convert to fraction form
    2,998.20/4,139.98 = 2,205.92/x
  3. Step 3: Cross multiply
    2,998.20x = 4,139.98 × 2,205.92
  4. Step 4: Simplify right side
    2,998.20x = 9,132,464.68
  5. Step 5: Solve for x
    x = 9,132,464.68/2,998.20
  6. Step 6: Final answer
    x = 3,045.98

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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.