Home / 2,821.68-4,231.88-1,902.84

Finding the Fourth Proportional to 2,821.68, 4,231.88 and 1,902.84

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Solution

The fourth proportional to 2,821.68, 4,231.88 and 1,902.84 is: 2,853.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.68 : 4,231.88 = 1,902.84 : x
  2. Step 2: Convert to fraction form
    2,821.68/4,231.88 = 1,902.84/x
  3. Step 3: Cross multiply
    2,821.68x = 4,231.88 × 1,902.84
  4. Step 4: Simplify right side
    2,821.68x = 8,052,590.54
  5. Step 5: Solve for x
    x = 8,052,590.54/2,821.68
  6. Step 6: Final answer
    x = 2,853.83

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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.