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Finding the Fourth Proportional to 4,999.45, 7,489.15 and 3,961.24

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Solution

The fourth proportional to 4,999.45, 7,489.15 and 3,961.24 is: 5,933.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,999.45 : 7,489.15 = 3,961.24 : x
  2. Step 2: Convert to fraction form
    4,999.45/7,489.15 = 3,961.24/x
  3. Step 3: Cross multiply
    4,999.45x = 7,489.15 × 3,961.24
  4. Step 4: Simplify right side
    4,999.45x = 29,666,320.55
  5. Step 5: Solve for x
    x = 29,666,320.55/4,999.45
  6. Step 6: Final answer
    x = 5,933.92

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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.