Home / 2,665.21-3,992.95-1,489.09

Finding the Fourth Proportional to 2,665.21, 3,992.95 and 1,489.09

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Solution

The fourth proportional to 2,665.21, 3,992.95 and 1,489.09 is: 2,230.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,665.21 : 3,992.95 = 1,489.09 : x
  2. Step 2: Convert to fraction form
    2,665.21/3,992.95 = 1,489.09/x
  3. Step 3: Cross multiply
    2,665.21x = 3,992.95 × 1,489.09
  4. Step 4: Simplify right side
    2,665.21x = 5,945,861.92
  5. Step 5: Solve for x
    x = 5,945,861.92/2,665.21
  6. Step 6: Final answer
    x = 2,230.92

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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.