Home / 2,820.58-4,231.41-872.44

Finding the Fourth Proportional to 2,820.58, 4,231.41 and 872.44

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Solution

The fourth proportional to 2,820.58, 4,231.41 and 872.44 is: 1,308.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.58 : 4,231.41 = 872.44 : x
  2. Step 2: Convert to fraction form
    2,820.58/4,231.41 = 872.44/x
  3. Step 3: Cross multiply
    2,820.58x = 4,231.41 × 872.44
  4. Step 4: Simplify right side
    2,820.58x = 3,691,651.34
  5. Step 5: Solve for x
    x = 3,691,651.34/2,820.58
  6. Step 6: Final answer
    x = 1,308.83

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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.