Home / 3,924.26-5,415.46-2,131.70

Finding the Fourth Proportional to 3,924.26, 5,415.46 and 2,131.70

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Solution

The fourth proportional to 3,924.26, 5,415.46 and 2,131.70 is: 2,941.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.26 : 5,415.46 = 2,131.70 : x
  2. Step 2: Convert to fraction form
    3,924.26/5,415.46 = 2,131.70/x
  3. Step 3: Cross multiply
    3,924.26x = 5,415.46 × 2,131.70
  4. Step 4: Simplify right side
    3,924.26x = 11,544,136.08
  5. Step 5: Solve for x
    x = 11,544,136.08/3,924.26
  6. Step 6: Final answer
    x = 2,941.74

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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.