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Finding the Fourth Proportional to 7,003.76, 9,664.92 and 3,859.88

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Solution

The fourth proportional to 7,003.76, 9,664.92 and 3,859.88 is: 5,326.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,003.76 : 9,664.92 = 3,859.88 : x
  2. Step 2: Convert to fraction form
    7,003.76/9,664.92 = 3,859.88/x
  3. Step 3: Cross multiply
    7,003.76x = 9,664.92 × 3,859.88
  4. Step 4: Simplify right side
    7,003.76x = 37,305,431.41
  5. Step 5: Solve for x
    x = 37,305,431.41/7,003.76
  6. Step 6: Final answer
    x = 5,326.49

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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.