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Finding the Fourth Proportional to 11,697.80, 17,547.60 and 3,906.62

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Solution

The fourth proportional to 11,697.80, 17,547.60 and 3,906.62 is: 5,860.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,697.80 : 17,547.60 = 3,906.62 : x
  2. Step 2: Convert to fraction form
    11,697.80/17,547.60 = 3,906.62/x
  3. Step 3: Cross multiply
    11,697.80x = 17,547.60 × 3,906.62
  4. Step 4: Simplify right side
    11,697.80x = 68,551,805.11
  5. Step 5: Solve for x
    x = 68,551,805.11/11,697.80
  6. Step 6: Final answer
    x = 5,860.23

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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.