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Finding the Fourth Proportional to 2,081.50, 3,122.26 and 620.62

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Solution

The fourth proportional to 2,081.50, 3,122.26 and 620.62 is: 930.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.50 : 3,122.26 = 620.62 : x
  2. Step 2: Convert to fraction form
    2,081.50/3,122.26 = 620.62/x
  3. Step 3: Cross multiply
    2,081.50x = 3,122.26 × 620.62
  4. Step 4: Simplify right side
    2,081.50x = 1,937,737.00
  5. Step 5: Solve for x
    x = 1,937,737.00/2,081.50
  6. Step 6: Final answer
    x = 930.93

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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.