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Finding the Fourth Proportional to 8,956.92, 13,416.91 and 5,247.90

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Solution

The fourth proportional to 8,956.92, 13,416.91 and 5,247.90 is: 7,861.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,956.92 : 13,416.91 = 5,247.90 : x
  2. Step 2: Convert to fraction form
    8,956.92/13,416.91 = 5,247.90/x
  3. Step 3: Cross multiply
    8,956.92x = 13,416.91 × 5,247.90
  4. Step 4: Simplify right side
    8,956.92x = 70,410,601.99
  5. Step 5: Solve for x
    x = 70,410,601.99/8,956.92
  6. Step 6: Final answer
    x = 7,861.03

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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.