Home / 2,787.58-4,178.94-1,398.97

Finding the Fourth Proportional to 2,787.58, 4,178.94 and 1,398.97

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Solution

The fourth proportional to 2,787.58, 4,178.94 and 1,398.97 is: 2,097.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.58 : 4,178.94 = 1,398.97 : x
  2. Step 2: Convert to fraction form
    2,787.58/4,178.94 = 1,398.97/x
  3. Step 3: Cross multiply
    2,787.58x = 4,178.94 × 1,398.97
  4. Step 4: Simplify right side
    2,787.58x = 5,846,211.69
  5. Step 5: Solve for x
    x = 5,846,211.69/2,787.58
  6. Step 6: Final answer
    x = 2,097.24

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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.