Home / 2,787.12-3,841.56-2,225.79

Finding the Fourth Proportional to 2,787.12, 3,841.56 and 2,225.79

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Solution

The fourth proportional to 2,787.12, 3,841.56 and 2,225.79 is: 3,067.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.12 : 3,841.56 = 2,225.79 : x
  2. Step 2: Convert to fraction form
    2,787.12/3,841.56 = 2,225.79/x
  3. Step 3: Cross multiply
    2,787.12x = 3,841.56 × 2,225.79
  4. Step 4: Simplify right side
    2,787.12x = 8,550,505.83
  5. Step 5: Solve for x
    x = 8,550,505.83/2,787.12
  6. Step 6: Final answer
    x = 3,067.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.