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Finding the Fourth Proportional to 3,239.46, 4,859.13 and 930.96

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Solution

The fourth proportional to 3,239.46, 4,859.13 and 930.96 is: 1,396.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.46 : 4,859.13 = 930.96 : x
  2. Step 2: Convert to fraction form
    3,239.46/4,859.13 = 930.96/x
  3. Step 3: Cross multiply
    3,239.46x = 4,859.13 × 930.96
  4. Step 4: Simplify right side
    3,239.46x = 4,523,655.66
  5. Step 5: Solve for x
    x = 4,523,655.66/3,239.46
  6. Step 6: Final answer
    x = 1,396.42

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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.