Home / 3,115.17-4,298.79-1,787.94

Finding the Fourth Proportional to 3,115.17, 4,298.79 and 1,787.94

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Solution

The fourth proportional to 3,115.17, 4,298.79 and 1,787.94 is: 2,467.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.17 : 4,298.79 = 1,787.94 : x
  2. Step 2: Convert to fraction form
    3,115.17/4,298.79 = 1,787.94/x
  3. Step 3: Cross multiply
    3,115.17x = 4,298.79 × 1,787.94
  4. Step 4: Simplify right side
    3,115.17x = 7,685,978.59
  5. Step 5: Solve for x
    x = 7,685,978.59/3,115.17
  6. Step 6: Final answer
    x = 2,467.27

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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.