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Finding the Fourth Proportional to 9,181.69, 13,773.51 and 2,939.47

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Solution

The fourth proportional to 9,181.69, 13,773.51 and 2,939.47 is: 4,409.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,181.69 : 13,773.51 = 2,939.47 : x
  2. Step 2: Convert to fraction form
    9,181.69/13,773.51 = 2,939.47/x
  3. Step 3: Cross multiply
    9,181.69x = 13,773.51 × 2,939.47
  4. Step 4: Simplify right side
    9,181.69x = 40,486,785.01
  5. Step 5: Solve for x
    x = 40,486,785.01/9,181.69
  6. Step 6: Final answer
    x = 4,409.51

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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.