Home / 2,138.76-3,211.29-1,848.54

Finding the Fourth Proportional to 2,138.76, 3,211.29 and 1,848.54

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Solution

The fourth proportional to 2,138.76, 3,211.29 and 1,848.54 is: 2,775.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.76 : 3,211.29 = 1,848.54 : x
  2. Step 2: Convert to fraction form
    2,138.76/3,211.29 = 1,848.54/x
  3. Step 3: Cross multiply
    2,138.76x = 3,211.29 × 1,848.54
  4. Step 4: Simplify right side
    2,138.76x = 5,936,198.02
  5. Step 5: Solve for x
    x = 5,936,198.02/2,138.76
  6. Step 6: Final answer
    x = 2,775.53

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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.