Home / 3,454.38-5,177.46-1,990.50

Finding the Fourth Proportional to 3,454.38, 5,177.46 and 1,990.50

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Solution

The fourth proportional to 3,454.38, 5,177.46 and 1,990.50 is: 2,983.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,454.38 : 5,177.46 = 1,990.50 : x
  2. Step 2: Convert to fraction form
    3,454.38/5,177.46 = 1,990.50/x
  3. Step 3: Cross multiply
    3,454.38x = 5,177.46 × 1,990.50
  4. Step 4: Simplify right side
    3,454.38x = 10,305,734.13
  5. Step 5: Solve for x
    x = 10,305,734.13/3,454.38
  6. Step 6: Final answer
    x = 2,983.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.