Home / 3,138.03-4,330.52-1,959.78

Finding the Fourth Proportional to 3,138.03, 4,330.52 and 1,959.78

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Solution

The fourth proportional to 3,138.03, 4,330.52 and 1,959.78 is: 2,704.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.03 : 4,330.52 = 1,959.78 : x
  2. Step 2: Convert to fraction form
    3,138.03/4,330.52 = 1,959.78/x
  3. Step 3: Cross multiply
    3,138.03x = 4,330.52 × 1,959.78
  4. Step 4: Simplify right side
    3,138.03x = 8,486,856.69
  5. Step 5: Solve for x
    x = 8,486,856.69/3,138.03
  6. Step 6: Final answer
    x = 2,704.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.