Home / 2,820.42-4,226.00-1,997.21

Finding the Fourth Proportional to 2,820.42, 4,226.00 and 1,997.21

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Solution

The fourth proportional to 2,820.42, 4,226.00 and 1,997.21 is: 2,992.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.42 : 4,226.00 = 1,997.21 : x
  2. Step 2: Convert to fraction form
    2,820.42/4,226.00 = 1,997.21/x
  3. Step 3: Cross multiply
    2,820.42x = 4,226.00 × 1,997.21
  4. Step 4: Simplify right side
    2,820.42x = 8,440,225.02
  5. Step 5: Solve for x
    x = 8,440,225.02/2,820.42
  6. Step 6: Final answer
    x = 2,992.54

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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.