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Finding the Fourth Proportional to 8,469.99, 12,705.03 and 3,849.75

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Solution

The fourth proportional to 8,469.99, 12,705.03 and 3,849.75 is: 5,774.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.99 : 12,705.03 = 3,849.75 : x
  2. Step 2: Convert to fraction form
    8,469.99/12,705.03 = 3,849.75/x
  3. Step 3: Cross multiply
    8,469.99x = 12,705.03 × 3,849.75
  4. Step 4: Simplify right side
    8,469.99x = 48,911,189.24
  5. Step 5: Solve for x
    x = 48,911,189.24/8,469.99
  6. Step 6: Final answer
    x = 5,774.65

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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.