Home / 2,021.89-3,032.02-789.12

Finding the Fourth Proportional to 2,021.89, 3,032.02 and 789.12

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Solution

The fourth proportional to 2,021.89, 3,032.02 and 789.12 is: 1,183.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.89 : 3,032.02 = 789.12 : x
  2. Step 2: Convert to fraction form
    2,021.89/3,032.02 = 789.12/x
  3. Step 3: Cross multiply
    2,021.89x = 3,032.02 × 789.12
  4. Step 4: Simplify right side
    2,021.89x = 2,392,627.62
  5. Step 5: Solve for x
    x = 2,392,627.62/2,021.89
  6. Step 6: Final answer
    x = 1,183.36

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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.