Home / 8,091.88-12,138.83-2,897.75

Finding the Fourth Proportional to 8,091.88, 12,138.83 and 2,897.75

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Solution

The fourth proportional to 8,091.88, 12,138.83 and 2,897.75 is: 4,346.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.88 : 12,138.83 = 2,897.75 : x
  2. Step 2: Convert to fraction form
    8,091.88/12,138.83 = 2,897.75/x
  3. Step 3: Cross multiply
    8,091.88x = 12,138.83 × 2,897.75
  4. Step 4: Simplify right side
    8,091.88x = 35,175,280.14
  5. Step 5: Solve for x
    x = 35,175,280.14/8,091.88
  6. Step 6: Final answer
    x = 4,346.99

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Similar ratio
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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.