Home / 3,233.20-4,855.20-2,142.40

Finding the Fourth Proportional to 3,233.20, 4,855.20 and 2,142.40

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Solution

The fourth proportional to 3,233.20, 4,855.20 and 2,142.40 is: 3,217.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,233.20 : 4,855.20 = 2,142.40 : x
  2. Step 2: Convert to fraction form
    3,233.20/4,855.20 = 2,142.40/x
  3. Step 3: Cross multiply
    3,233.20x = 4,855.20 × 2,142.40
  4. Step 4: Simplify right side
    3,233.20x = 10,401,780.48
  5. Step 5: Solve for x
    x = 10,401,780.48/3,233.20
  6. Step 6: Final answer
    x = 3,217.18

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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.