Home / 9,149.12-12,625.62-5,170.15

Finding the Fourth Proportional to 9,149.12, 12,625.62 and 5,170.15

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Solution

The fourth proportional to 9,149.12, 12,625.62 and 5,170.15 is: 7,134.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,149.12 : 12,625.62 = 5,170.15 : x
  2. Step 2: Convert to fraction form
    9,149.12/12,625.62 = 5,170.15/x
  3. Step 3: Cross multiply
    9,149.12x = 12,625.62 × 5,170.15
  4. Step 4: Simplify right side
    9,149.12x = 65,276,365.59
  5. Step 5: Solve for x
    x = 65,276,365.59/9,149.12
  6. Step 6: Final answer
    x = 7,134.71

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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.