Home / 3,121.16-4,680.37-1,659.97

Finding the Fourth Proportional to 3,121.16, 4,680.37 and 1,659.97

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Solution

The fourth proportional to 3,121.16, 4,680.37 and 1,659.97 is: 2,489.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.16 : 4,680.37 = 1,659.97 : x
  2. Step 2: Convert to fraction form
    3,121.16/4,680.37 = 1,659.97/x
  3. Step 3: Cross multiply
    3,121.16x = 4,680.37 × 1,659.97
  4. Step 4: Simplify right side
    3,121.16x = 7,769,242.09
  5. Step 5: Solve for x
    x = 7,769,242.09/3,121.16
  6. Step 6: Final answer
    x = 2,489.22

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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.