Home / 2,028.30-3,042.45-489.30

Finding the Fourth Proportional to 2,028.30, 3,042.45 and 489.30

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Solution

The fourth proportional to 2,028.30, 3,042.45 and 489.30 is: 733.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.30 : 3,042.45 = 489.30 : x
  2. Step 2: Convert to fraction form
    2,028.30/3,042.45 = 489.30/x
  3. Step 3: Cross multiply
    2,028.30x = 3,042.45 × 489.30
  4. Step 4: Simplify right side
    2,028.30x = 1,488,670.79
  5. Step 5: Solve for x
    x = 1,488,670.79/2,028.30
  6. Step 6: Final answer
    x = 733.95

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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.