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Finding the Fourth Proportional to 3,231.26, 4,847.63 and 922.76

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Solution

The fourth proportional to 3,231.26, 4,847.63 and 922.76 is: 1,384.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.26 : 4,847.63 = 922.76 : x
  2. Step 2: Convert to fraction form
    3,231.26/4,847.63 = 922.76/x
  3. Step 3: Cross multiply
    3,231.26x = 4,847.63 × 922.76
  4. Step 4: Simplify right side
    3,231.26x = 4,473,170.21
  5. Step 5: Solve for x
    x = 4,473,170.21/3,231.26
  6. Step 6: Final answer
    x = 1,384.34

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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.