Home / 3,811.26-5,257.57-2,690.43

Finding the Fourth Proportional to 3,811.26, 5,257.57 and 2,690.43

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Solution

The fourth proportional to 3,811.26, 5,257.57 and 2,690.43 is: 3,711.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.26 : 5,257.57 = 2,690.43 : x
  2. Step 2: Convert to fraction form
    3,811.26/5,257.57 = 2,690.43/x
  3. Step 3: Cross multiply
    3,811.26x = 5,257.57 × 2,690.43
  4. Step 4: Simplify right side
    3,811.26x = 14,145,095.09
  5. Step 5: Solve for x
    x = 14,145,095.09/3,811.26
  6. Step 6: Final answer
    x = 3,711.39

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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.