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Finding the Fourth Proportional to 6,997.85, 9,657.03 and 3,854

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Solution

The fourth proportional to 6,997.85, 9,657.03 and 3,854 is: 5,318.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,997.85 : 9,657.03 = 3,854 : x
  2. Step 2: Convert to fraction form
    6,997.85/9,657.03 = 3,854/x
  3. Step 3: Cross multiply
    6,997.85x = 9,657.03 × 3,854
  4. Step 4: Simplify right side
    6,997.85x = 37,218,193.62
  5. Step 5: Solve for x
    x = 37,218,193.62/6,997.85
  6. Step 6: Final answer
    x = 5,318.52

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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.