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Finding the Fourth Proportional to 8,755.70, 13,108.84 and 8,066.79

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Solution

The fourth proportional to 8,755.70, 13,108.84 and 8,066.79 is: 12,077.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.70 : 13,108.84 = 8,066.79 : x
  2. Step 2: Convert to fraction form
    8,755.70/13,108.84 = 8,066.79/x
  3. Step 3: Cross multiply
    8,755.70x = 13,108.84 × 8,066.79
  4. Step 4: Simplify right side
    8,755.70x = 105,746,239.26
  5. Step 5: Solve for x
    x = 105,746,239.26/8,755.70
  6. Step 6: Final answer
    x = 12,077.42

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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.