Home / 8,137.13-12,205.69-1,981.13

Finding the Fourth Proportional to 8,137.13, 12,205.69 and 1,981.13

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Solution

The fourth proportional to 8,137.13, 12,205.69 and 1,981.13 is: 2,971.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,137.13 : 12,205.69 = 1,981.13 : x
  2. Step 2: Convert to fraction form
    8,137.13/12,205.69 = 1,981.13/x
  3. Step 3: Cross multiply
    8,137.13x = 12,205.69 × 1,981.13
  4. Step 4: Simplify right side
    8,137.13x = 24,180,997.60
  5. Step 5: Solve for x
    x = 24,180,997.60/8,137.13
  6. Step 6: Final answer
    x = 2,971.69

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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.