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Finding the Fourth Proportional to 11,936.60, 17,907.40 and 3,617.40

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Solution

The fourth proportional to 11,936.60, 17,907.40 and 3,617.40 is: 5,426.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,936.60 : 17,907.40 = 3,617.40 : x
  2. Step 2: Convert to fraction form
    11,936.60/17,907.40 = 3,617.40/x
  3. Step 3: Cross multiply
    11,936.60x = 17,907.40 × 3,617.40
  4. Step 4: Simplify right side
    11,936.60x = 64,778,228.76
  5. Step 5: Solve for x
    x = 64,778,228.76/11,936.60
  6. Step 6: Final answer
    x = 5,426.86

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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.