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Finding the Fourth Proportional to 8,522.45, 12,715.22 and 7,586.90

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Solution

The fourth proportional to 8,522.45, 12,715.22 and 7,586.90 is: 11,319.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,522.45 : 12,715.22 = 7,586.90 : x
  2. Step 2: Convert to fraction form
    8,522.45/12,715.22 = 7,586.90/x
  3. Step 3: Cross multiply
    8,522.45x = 12,715.22 × 7,586.90
  4. Step 4: Simplify right side
    8,522.45x = 96,469,102.62
  5. Step 5: Solve for x
    x = 96,469,102.62/8,522.45
  6. Step 6: Final answer
    x = 11,319.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.