Home / 2,138.22-3,207.06-838.98

Finding the Fourth Proportional to 2,138.22, 3,207.06 and 838.98

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Solution

The fourth proportional to 2,138.22, 3,207.06 and 838.98 is: 1,258.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.22 : 3,207.06 = 838.98 : x
  2. Step 2: Convert to fraction form
    2,138.22/3,207.06 = 838.98/x
  3. Step 3: Cross multiply
    2,138.22x = 3,207.06 × 838.98
  4. Step 4: Simplify right side
    2,138.22x = 2,690,659.20
  5. Step 5: Solve for x
    x = 2,690,659.20/2,138.22
  6. Step 6: Final answer
    x = 1,258.36

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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.