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Finding the Fourth Proportional to 9,686, 14,531.16 and 3,530

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Solution

The fourth proportional to 9,686, 14,531.16 and 3,530 is: 5,295.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,686 : 14,531.16 = 3,530 : x
  2. Step 2: Convert to fraction form
    9,686/14,531.16 = 3,530/x
  3. Step 3: Cross multiply
    9,686x = 14,531.16 × 3,530
  4. Step 4: Simplify right side
    9,686x = 51,294,994.80
  5. Step 5: Solve for x
    x = 51,294,994.80/9,686
  6. Step 6: Final answer
    x = 5,295.79

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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.