Home / 4,021.20-6,031.80-1,942.80

Finding the Fourth Proportional to 4,021.20, 6,031.80 and 1,942.80

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Solution

The fourth proportional to 4,021.20, 6,031.80 and 1,942.80 is: 2,914.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,021.20 : 6,031.80 = 1,942.80 : x
  2. Step 2: Convert to fraction form
    4,021.20/6,031.80 = 1,942.80/x
  3. Step 3: Cross multiply
    4,021.20x = 6,031.80 × 1,942.80
  4. Step 4: Simplify right side
    4,021.20x = 11,718,581.04
  5. Step 5: Solve for x
    x = 11,718,581.04/4,021.20
  6. Step 6: Final answer
    x = 2,914.20

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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.