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Finding the Fourth Proportional to 7,755.39, 11,631.13 and 3,073.78

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Solution

The fourth proportional to 7,755.39, 11,631.13 and 3,073.78 is: 4,609.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,755.39 : 11,631.13 = 3,073.78 : x
  2. Step 2: Convert to fraction form
    7,755.39/11,631.13 = 3,073.78/x
  3. Step 3: Cross multiply
    7,755.39x = 11,631.13 × 3,073.78
  4. Step 4: Simplify right side
    7,755.39x = 35,751,534.77
  5. Step 5: Solve for x
    x = 35,751,534.77/7,755.39
  6. Step 6: Final answer
    x = 4,609.90

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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.