Home / 3,423.20-5,131.68-1,231.43

Finding the Fourth Proportional to 3,423.20, 5,131.68 and 1,231.43

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Solution

The fourth proportional to 3,423.20, 5,131.68 and 1,231.43 is: 1,846.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.20 : 5,131.68 = 1,231.43 : x
  2. Step 2: Convert to fraction form
    3,423.20/5,131.68 = 1,231.43/x
  3. Step 3: Cross multiply
    3,423.20x = 5,131.68 × 1,231.43
  4. Step 4: Simplify right side
    3,423.20x = 6,319,274.43
  5. Step 5: Solve for x
    x = 6,319,274.43/3,423.20
  6. Step 6: Final answer
    x = 1,846.01

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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.