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Finding the Fourth Proportional to 3,418.59, 5,132.07 and 1,939.08

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Solution

The fourth proportional to 3,418.59, 5,132.07 and 1,939.08 is: 2,910.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.59 : 5,132.07 = 1,939.08 : x
  2. Step 2: Convert to fraction form
    3,418.59/5,132.07 = 1,939.08/x
  3. Step 3: Cross multiply
    3,418.59x = 5,132.07 × 1,939.08
  4. Step 4: Simplify right side
    3,418.59x = 9,951,494.30
  5. Step 5: Solve for x
    x = 9,951,494.30/3,418.59
  6. Step 6: Final answer
    x = 2,910.99

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1.5x scale

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.