Home / 2,081.10-3,122.26-620.30

Finding the Fourth Proportional to 2,081.10, 3,122.26 and 620.30

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Solution

The fourth proportional to 2,081.10, 3,122.26 and 620.30 is: 930.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.10 : 3,122.26 = 620.30 : x
  2. Step 2: Convert to fraction form
    2,081.10/3,122.26 = 620.30/x
  3. Step 3: Cross multiply
    2,081.10x = 3,122.26 × 620.30
  4. Step 4: Simplify right side
    2,081.10x = 1,936,737.88
  5. Step 5: Solve for x
    x = 1,936,737.88/2,081.10
  6. Step 6: Final answer
    x = 930.63

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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.