Home / 3,611.12-5,408.78-2,147.04

Finding the Fourth Proportional to 3,611.12, 5,408.78 and 2,147.04

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Solution

The fourth proportional to 3,611.12, 5,408.78 and 2,147.04 is: 3,215.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.12 : 5,408.78 = 2,147.04 : x
  2. Step 2: Convert to fraction form
    3,611.12/5,408.78 = 2,147.04/x
  3. Step 3: Cross multiply
    3,611.12x = 5,408.78 × 2,147.04
  4. Step 4: Simplify right side
    3,611.12x = 11,612,856.28
  5. Step 5: Solve for x
    x = 11,612,856.28/3,611.12
  6. Step 6: Final answer
    x = 3,215.86

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1.5x scale

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.