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Finding the Fourth Proportional to 7,755.30, 11,629.40 and 2,489.30

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Solution

The fourth proportional to 7,755.30, 11,629.40 and 2,489.30 is: 3,732.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,755.30 : 11,629.40 = 2,489.30 : x
  2. Step 2: Convert to fraction form
    7,755.30/11,629.40 = 2,489.30/x
  3. Step 3: Cross multiply
    7,755.30x = 11,629.40 × 2,489.30
  4. Step 4: Simplify right side
    7,755.30x = 28,949,065.42
  5. Step 5: Solve for x
    x = 28,949,065.42/7,755.30
  6. Step 6: Final answer
    x = 3,732.81

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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.