Home / 2,021.68-3,028.44-1,289.44

Finding the Fourth Proportional to 2,021.68, 3,028.44 and 1,289.44

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Solution

The fourth proportional to 2,021.68, 3,028.44 and 1,289.44 is: 1,931.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.68 : 3,028.44 = 1,289.44 : x
  2. Step 2: Convert to fraction form
    2,021.68/3,028.44 = 1,289.44/x
  3. Step 3: Cross multiply
    2,021.68x = 3,028.44 × 1,289.44
  4. Step 4: Simplify right side
    2,021.68x = 3,904,991.67
  5. Step 5: Solve for x
    x = 3,904,991.67/2,021.68
  6. Step 6: Final answer
    x = 1,931.56

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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.