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Finding the Fourth Proportional to 8,817.99, 12,169.40 and 6,164.43

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Solution

The fourth proportional to 8,817.99, 12,169.40 and 6,164.43 is: 8,507.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,817.99 : 12,169.40 = 6,164.43 : x
  2. Step 2: Convert to fraction form
    8,817.99/12,169.40 = 6,164.43/x
  3. Step 3: Cross multiply
    8,817.99x = 12,169.40 × 6,164.43
  4. Step 4: Simplify right side
    8,817.99x = 75,017,414.44
  5. Step 5: Solve for x
    x = 75,017,414.44/8,817.99
  6. Step 6: Final answer
    x = 8,507.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.