Home / 2,867.19-4,300.78-787.04

Finding the Fourth Proportional to 2,867.19, 4,300.78 and 787.04

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Solution

The fourth proportional to 2,867.19, 4,300.78 and 787.04 is: 1,180.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.19 : 4,300.78 = 787.04 : x
  2. Step 2: Convert to fraction form
    2,867.19/4,300.78 = 787.04/x
  3. Step 3: Cross multiply
    2,867.19x = 4,300.78 × 787.04
  4. Step 4: Simplify right side
    2,867.19x = 3,384,863.24
  5. Step 5: Solve for x
    x = 3,384,863.24/2,867.19
  6. Step 6: Final answer
    x = 1,180.55

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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.