Home / 3,938.52-5,435.11-2,170.09

Finding the Fourth Proportional to 3,938.52, 5,435.11 and 2,170.09

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Solution

The fourth proportional to 3,938.52, 5,435.11 and 2,170.09 is: 2,994.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.52 : 5,435.11 = 2,170.09 : x
  2. Step 2: Convert to fraction form
    3,938.52/5,435.11 = 2,170.09/x
  3. Step 3: Cross multiply
    3,938.52x = 5,435.11 × 2,170.09
  4. Step 4: Simplify right side
    3,938.52x = 11,794,650.68
  5. Step 5: Solve for x
    x = 11,794,650.68/3,938.52
  6. Step 6: Final answer
    x = 2,994.69

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1.5x scale

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.