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Finding the Fourth Proportional to 11,955, 17,932.50 and 3,747

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Solution

The fourth proportional to 11,955, 17,932.50 and 3,747 is: 5,620.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,955 : 17,932.50 = 3,747 : x
  2. Step 2: Convert to fraction form
    11,955/17,932.50 = 3,747/x
  3. Step 3: Cross multiply
    11,955x = 17,932.50 × 3,747
  4. Step 4: Simplify right side
    11,955x = 67,193,077.50
  5. Step 5: Solve for x
    x = 67,193,077.50/11,955
  6. Step 6: Final answer
    x = 5,620.50

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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.