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Finding the Fourth Proportional to 8,517.36, 12,821.16 and 6,069.12

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Solution

The fourth proportional to 8,517.36, 12,821.16 and 6,069.12 is: 9,135.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.36 : 12,821.16 = 6,069.12 : x
  2. Step 2: Convert to fraction form
    8,517.36/12,821.16 = 6,069.12/x
  3. Step 3: Cross multiply
    8,517.36x = 12,821.16 × 6,069.12
  4. Step 4: Simplify right side
    8,517.36x = 77,813,158.58
  5. Step 5: Solve for x
    x = 77,813,158.58/8,517.36
  6. Step 6: Final answer
    x = 9,135.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.