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Finding the Fourth Proportional to 6,989.26, 9,645.16 and 3,845.44

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Solution

The fourth proportional to 6,989.26, 9,645.16 and 3,845.44 is: 5,306.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.26 : 9,645.16 = 3,845.44 : x
  2. Step 2: Convert to fraction form
    6,989.26/9,645.16 = 3,845.44/x
  3. Step 3: Cross multiply
    6,989.26x = 9,645.16 × 3,845.44
  4. Step 4: Simplify right side
    6,989.26x = 37,089,884.07
  5. Step 5: Solve for x
    x = 37,089,884.07/6,989.26
  6. Step 6: Final answer
    x = 5,306.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.