Home / 2,820.20-4,226.18-2,664.40

Finding the Fourth Proportional to 2,820.20, 4,226.18 and 2,664.40

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Solution

The fourth proportional to 2,820.20, 4,226.18 and 2,664.40 is: 3,992.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.20 : 4,226.18 = 2,664.40 : x
  2. Step 2: Convert to fraction form
    2,820.20/4,226.18 = 2,664.40/x
  3. Step 3: Cross multiply
    2,820.20x = 4,226.18 × 2,664.40
  4. Step 4: Simplify right side
    2,820.20x = 11,260,233.99
  5. Step 5: Solve for x
    x = 11,260,233.99/2,820.20
  6. Step 6: Final answer
    x = 3,992.71

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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.