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Finding the Fourth Proportional to 3,489.08, 4,814.81 and 1,917.08

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Solution

The fourth proportional to 3,489.08, 4,814.81 and 1,917.08 is: 2,645.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.08 : 4,814.81 = 1,917.08 : x
  2. Step 2: Convert to fraction form
    3,489.08/4,814.81 = 1,917.08/x
  3. Step 3: Cross multiply
    3,489.08x = 4,814.81 × 1,917.08
  4. Step 4: Simplify right side
    3,489.08x = 9,230,375.95
  5. Step 5: Solve for x
    x = 9,230,375.95/3,489.08
  6. Step 6: Final answer
    x = 2,645.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.