Home / 2,612.20-3,920.10-1,882.40

Finding the Fourth Proportional to 2,612.20, 3,920.10 and 1,882.40

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Solution

The fourth proportional to 2,612.20, 3,920.10 and 1,882.40 is: 2,824.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,612.20 : 3,920.10 = 1,882.40 : x
  2. Step 2: Convert to fraction form
    2,612.20/3,920.10 = 1,882.40/x
  3. Step 3: Cross multiply
    2,612.20x = 3,920.10 × 1,882.40
  4. Step 4: Simplify right side
    2,612.20x = 7,379,196.24
  5. Step 5: Solve for x
    x = 7,379,196.24/2,612.20
  6. Step 6: Final answer
    x = 2,824.90

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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.