Home / 2,181.72-3,272.58-621.88

Finding the Fourth Proportional to 2,181.72, 3,272.58 and 621.88

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Solution

The fourth proportional to 2,181.72, 3,272.58 and 621.88 is: 932.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.72 : 3,272.58 = 621.88 : x
  2. Step 2: Convert to fraction form
    2,181.72/3,272.58 = 621.88/x
  3. Step 3: Cross multiply
    2,181.72x = 3,272.58 × 621.88
  4. Step 4: Simplify right side
    2,181.72x = 2,035,152.05
  5. Step 5: Solve for x
    x = 2,035,152.05/2,181.72
  6. Step 6: Final answer
    x = 932.82

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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.