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Finding the Fourth Proportional to 5,294.45, 7,945.73 and 3,812.96

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Solution

The fourth proportional to 5,294.45, 7,945.73 and 3,812.96 is: 5,722.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,294.45 : 7,945.73 = 3,812.96 : x
  2. Step 2: Convert to fraction form
    5,294.45/7,945.73 = 3,812.96/x
  3. Step 3: Cross multiply
    5,294.45x = 7,945.73 × 3,812.96
  4. Step 4: Simplify right side
    5,294.45x = 30,296,750.66
  5. Step 5: Solve for x
    x = 30,296,750.66/5,294.45
  6. Step 6: Final answer
    x = 5,722.36

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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.