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Finding the Fourth Proportional to 8,191.99, 12,285.82 and 2,347.21

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Solution

The fourth proportional to 8,191.99, 12,285.82 and 2,347.21 is: 3,520.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.99 : 12,285.82 = 2,347.21 : x
  2. Step 2: Convert to fraction form
    8,191.99/12,285.82 = 2,347.21/x
  3. Step 3: Cross multiply
    8,191.99x = 12,285.82 × 2,347.21
  4. Step 4: Simplify right side
    8,191.99x = 28,837,399.56
  5. Step 5: Solve for x
    x = 28,837,399.56/8,191.99
  6. Step 6: Final answer
    x = 3,520.19

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Similar ratio
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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.