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Finding the Fourth Proportional to 3,489.11, 4,814.98 and 1,917.19

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Solution

The fourth proportional to 3,489.11, 4,814.98 and 1,917.19 is: 2,645.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.11 : 4,814.98 = 1,917.19 : x
  2. Step 2: Convert to fraction form
    3,489.11/4,814.98 = 1,917.19/x
  3. Step 3: Cross multiply
    3,489.11x = 4,814.98 × 1,917.19
  4. Step 4: Simplify right side
    3,489.11x = 9,231,231.51
  5. Step 5: Solve for x
    x = 9,231,231.51/3,489.11
  6. Step 6: Final answer
    x = 2,645.73

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1.5x scale

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.