Home / 3,121.51-4,680.96-1,271.37

Finding the Fourth Proportional to 3,121.51, 4,680.96 and 1,271.37

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Solution

The fourth proportional to 3,121.51, 4,680.96 and 1,271.37 is: 1,906.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.51 : 4,680.96 = 1,271.37 : x
  2. Step 2: Convert to fraction form
    3,121.51/4,680.96 = 1,271.37/x
  3. Step 3: Cross multiply
    3,121.51x = 4,680.96 × 1,271.37
  4. Step 4: Simplify right side
    3,121.51x = 5,951,202.35
  5. Step 5: Solve for x
    x = 5,951,202.35/3,121.51
  6. Step 6: Final answer
    x = 1,906.52

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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.