Home / 2,181.83-3,272.24-621.80

Finding the Fourth Proportional to 2,181.83, 3,272.24 and 621.80

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Solution

The fourth proportional to 2,181.83, 3,272.24 and 621.80 is: 932.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.83 : 3,272.24 = 621.80 : x
  2. Step 2: Convert to fraction form
    2,181.83/3,272.24 = 621.80/x
  3. Step 3: Cross multiply
    2,181.83x = 3,272.24 × 621.80
  4. Step 4: Simplify right side
    2,181.83x = 2,034,676.30
  5. Step 5: Solve for x
    x = 2,034,676.30/2,181.83
  6. Step 6: Final answer
    x = 932.56

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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.