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Finding the Fourth Proportional to 6,481.34, 8,936.05 and 4,239.66

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Solution

The fourth proportional to 6,481.34, 8,936.05 and 4,239.66 is: 5,845.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,481.34 : 8,936.05 = 4,239.66 : x
  2. Step 2: Convert to fraction form
    6,481.34/8,936.05 = 4,239.66/x
  3. Step 3: Cross multiply
    6,481.34x = 8,936.05 × 4,239.66
  4. Step 4: Simplify right side
    6,481.34x = 37,885,813.74
  5. Step 5: Solve for x
    x = 37,885,813.74/6,481.34
  6. Step 6: Final answer
    x = 5,845.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.