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Finding the Fourth Proportional to 3,169.87, 4,371.13 and 1,910.68

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Solution

The fourth proportional to 3,169.87, 4,371.13 and 1,910.68 is: 2,634.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,169.87 : 4,371.13 = 1,910.68 : x
  2. Step 2: Convert to fraction form
    3,169.87/4,371.13 = 1,910.68/x
  3. Step 3: Cross multiply
    3,169.87x = 4,371.13 × 1,910.68
  4. Step 4: Simplify right side
    3,169.87x = 8,351,830.67
  5. Step 5: Solve for x
    x = 8,351,830.67/3,169.87
  6. Step 6: Final answer
    x = 2,634.75

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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.