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Finding the Fourth Proportional to 8,512.88, 12,755.64 and 5,588.96

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Solution

The fourth proportional to 8,512.88, 12,755.64 and 5,588.96 is: 8,374.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512.88 : 12,755.64 = 5,588.96 : x
  2. Step 2: Convert to fraction form
    8,512.88/12,755.64 = 5,588.96/x
  3. Step 3: Cross multiply
    8,512.88x = 12,755.64 × 5,588.96
  4. Step 4: Simplify right side
    8,512.88x = 71,290,761.73
  5. Step 5: Solve for x
    x = 71,290,761.73/8,512.88
  6. Step 6: Final answer
    x = 8,374.46

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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.