Home / 2,181.22-3,271.83-621.39

Finding the Fourth Proportional to 2,181.22, 3,271.83 and 621.39

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Solution

The fourth proportional to 2,181.22, 3,271.83 and 621.39 is: 932.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.22 : 3,271.83 = 621.39 : x
  2. Step 2: Convert to fraction form
    2,181.22/3,271.83 = 621.39/x
  3. Step 3: Cross multiply
    2,181.22x = 3,271.83 × 621.39
  4. Step 4: Simplify right side
    2,181.22x = 2,033,082.44
  5. Step 5: Solve for x
    x = 2,033,082.44/2,181.22
  6. Step 6: Final answer
    x = 932.09

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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.