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Finding the Fourth Proportional to 8,081.87, 12,104.99 and 6,219.28

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Solution

The fourth proportional to 8,081.87, 12,104.99 and 6,219.28 is: 9,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.87 : 12,104.99 = 6,219.28 : x
  2. Step 2: Convert to fraction form
    8,081.87/12,104.99 = 6,219.28/x
  3. Step 3: Cross multiply
    8,081.87x = 12,104.99 × 6,219.28
  4. Step 4: Simplify right side
    8,081.87x = 75,284,230.59
  5. Step 5: Solve for x
    x = 75,284,230.59/8,081.87
  6. Step 6: Final answer
    x = 9,315.20

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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.