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Finding the Fourth Proportional to 7,841.66, 11,759.36 and 3,456

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Solution

The fourth proportional to 7,841.66, 11,759.36 and 3,456 is: 5,182.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,841.66 : 11,759.36 = 3,456 : x
  2. Step 2: Convert to fraction form
    7,841.66/11,759.36 = 3,456/x
  3. Step 3: Cross multiply
    7,841.66x = 11,759.36 × 3,456
  4. Step 4: Simplify right side
    7,841.66x = 40,640,330.88
  5. Step 5: Solve for x
    x = 40,640,330.88/7,841.66
  6. Step 6: Final answer
    x = 5,182.62

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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.