Home / 3,874.60-5,346.97-2,106.21

Finding the Fourth Proportional to 3,874.60, 5,346.97 and 2,106.21

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Solution

The fourth proportional to 3,874.60, 5,346.97 and 2,106.21 is: 2,906.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,874.60 : 5,346.97 = 2,106.21 : x
  2. Step 2: Convert to fraction form
    3,874.60/5,346.97 = 2,106.21/x
  3. Step 3: Cross multiply
    3,874.60x = 5,346.97 × 2,106.21
  4. Step 4: Simplify right side
    3,874.60x = 11,261,856.47
  5. Step 5: Solve for x
    x = 11,261,856.47/3,874.60
  6. Step 6: Final answer
    x = 2,906.58

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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.