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Finding the Fourth Proportional to 7,759.17, 11,640.59 and 2,212.59

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Solution

The fourth proportional to 7,759.17, 11,640.59 and 2,212.59 is: 3,319.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,759.17 : 11,640.59 = 2,212.59 : x
  2. Step 2: Convert to fraction form
    7,759.17/11,640.59 = 2,212.59/x
  3. Step 3: Cross multiply
    7,759.17x = 11,640.59 × 2,212.59
  4. Step 4: Simplify right side
    7,759.17x = 25,755,858.56
  5. Step 5: Solve for x
    x = 25,755,858.56/7,759.17
  6. Step 6: Final answer
    x = 3,319.41

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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.