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Finding the Fourth Proportional to 8,755.52, 13,064.99 and 7,811.98

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Solution

The fourth proportional to 8,755.52, 13,064.99 and 7,811.98 is: 11,657.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.52 : 13,064.99 = 7,811.98 : x
  2. Step 2: Convert to fraction form
    8,755.52/13,064.99 = 7,811.98/x
  3. Step 3: Cross multiply
    8,755.52x = 13,064.99 × 7,811.98
  4. Step 4: Simplify right side
    8,755.52x = 102,063,451.94
  5. Step 5: Solve for x
    x = 102,063,451.94/8,755.52
  6. Step 6: Final answer
    x = 11,657.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.