Home / 2,019.47-3,029.27-787.19

Finding the Fourth Proportional to 2,019.47, 3,029.27 and 787.19

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Solution

The fourth proportional to 2,019.47, 3,029.27 and 787.19 is: 1,180.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,019.47 : 3,029.27 = 787.19 : x
  2. Step 2: Convert to fraction form
    2,019.47/3,029.27 = 787.19/x
  3. Step 3: Cross multiply
    2,019.47x = 3,029.27 × 787.19
  4. Step 4: Simplify right side
    2,019.47x = 2,384,591.97
  5. Step 5: Solve for x
    x = 2,384,591.97/2,019.47
  6. Step 6: Final answer
    x = 1,180.80

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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.