Home / 3,924.12-5,392.29-3,136.80

Finding the Fourth Proportional to 3,924.12, 5,392.29 and 3,136.80

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Solution

The fourth proportional to 3,924.12, 5,392.29 and 3,136.80 is: 4,310.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.12 : 5,392.29 = 3,136.80 : x
  2. Step 2: Convert to fraction form
    3,924.12/5,392.29 = 3,136.80/x
  3. Step 3: Cross multiply
    3,924.12x = 5,392.29 × 3,136.80
  4. Step 4: Simplify right side
    3,924.12x = 16,914,535.27
  5. Step 5: Solve for x
    x = 16,914,535.27/3,924.12
  6. Step 6: Final answer
    x = 4,310.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.