Home / 2,974.80-4,103.90-2,091.18

Finding the Fourth Proportional to 2,974.80, 4,103.90 and 2,091.18

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Solution

The fourth proportional to 2,974.80, 4,103.90 and 2,091.18 is: 2,884.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,974.80 : 4,103.90 = 2,091.18 : x
  2. Step 2: Convert to fraction form
    2,974.80/4,103.90 = 2,091.18/x
  3. Step 3: Cross multiply
    2,974.80x = 4,103.90 × 2,091.18
  4. Step 4: Simplify right side
    2,974.80x = 8,581,993.60
  5. Step 5: Solve for x
    x = 8,581,993.60/2,974.80
  6. Step 6: Final answer
    x = 2,884.90

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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.