Home / 9,138.22-12,610.82-5,361.44

Finding the Fourth Proportional to 9,138.22, 12,610.82 and 5,361.44

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Solution

The fourth proportional to 9,138.22, 12,610.82 and 5,361.44 is: 7,398.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.22 : 12,610.82 = 5,361.44 : x
  2. Step 2: Convert to fraction form
    9,138.22/12,610.82 = 5,361.44/x
  3. Step 3: Cross multiply
    9,138.22x = 12,610.82 × 5,361.44
  4. Step 4: Simplify right side
    9,138.22x = 67,612,154.78
  5. Step 5: Solve for x
    x = 67,612,154.78/9,138.22
  6. Step 6: Final answer
    x = 7,398.83

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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.