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Finding the Fourth Proportional to 8,579.32, 12,839.76 and 7,194.22

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Solution

The fourth proportional to 8,579.32, 12,839.76 and 7,194.22 is: 10,766.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.32 : 12,839.76 = 7,194.22 : x
  2. Step 2: Convert to fraction form
    8,579.32/12,839.76 = 7,194.22/x
  3. Step 3: Cross multiply
    8,579.32x = 12,839.76 × 7,194.22
  4. Step 4: Simplify right side
    8,579.32x = 92,372,058.19
  5. Step 5: Solve for x
    x = 92,372,058.19/8,579.32
  6. Step 6: Final answer
    x = 10,766.83

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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.