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Finding the Fourth Proportional to 8,472.84, 12,709.62 and 5,183.88

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Solution

The fourth proportional to 8,472.84, 12,709.62 and 5,183.88 is: 7,776.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.84 : 12,709.62 = 5,183.88 : x
  2. Step 2: Convert to fraction form
    8,472.84/12,709.62 = 5,183.88/x
  3. Step 3: Cross multiply
    8,472.84x = 12,709.62 × 5,183.88
  4. Step 4: Simplify right side
    8,472.84x = 65,885,144.93
  5. Step 5: Solve for x
    x = 65,885,144.93/8,472.84
  6. Step 6: Final answer
    x = 7,776.04

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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.