Home / 2,081.07-3,121.77-620.22

Finding the Fourth Proportional to 2,081.07, 3,121.77 and 620.22

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Solution

The fourth proportional to 2,081.07, 3,121.77 and 620.22 is: 930.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.07 : 3,121.77 = 620.22 : x
  2. Step 2: Convert to fraction form
    2,081.07/3,121.77 = 620.22/x
  3. Step 3: Cross multiply
    2,081.07x = 3,121.77 × 620.22
  4. Step 4: Simplify right side
    2,081.07x = 1,936,184.19
  5. Step 5: Solve for x
    x = 1,936,184.19/2,081.07
  6. Step 6: Final answer
    x = 930.38

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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.