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Finding the Fourth Proportional to 8,753.40, 13,131.99 and 4,069.98

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Solution

The fourth proportional to 8,753.40, 13,131.99 and 4,069.98 is: 6,105.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,753.40 : 13,131.99 = 4,069.98 : x
  2. Step 2: Convert to fraction form
    8,753.40/13,131.99 = 4,069.98/x
  3. Step 3: Cross multiply
    8,753.40x = 13,131.99 × 4,069.98
  4. Step 4: Simplify right side
    8,753.40x = 53,446,936.66
  5. Step 5: Solve for x
    x = 53,446,936.66/8,753.40
  6. Step 6: Final answer
    x = 6,105.85

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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.