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Finding the Fourth Proportional to 11,687, 17,533.38 and 3,479

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Solution

The fourth proportional to 11,687, 17,533.38 and 3,479 is: 5,219.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687 : 17,533.38 = 3,479 : x
  2. Step 2: Convert to fraction form
    11,687/17,533.38 = 3,479/x
  3. Step 3: Cross multiply
    11,687x = 17,533.38 × 3,479
  4. Step 4: Simplify right side
    11,687x = 60,998,629.02
  5. Step 5: Solve for x
    x = 60,998,629.02/11,687
  6. Step 6: Final answer
    x = 5,219.36

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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.