Home / 2,078.68-2,872.38-1,977.44

Finding the Fourth Proportional to 2,078.68, 2,872.38 and 1,977.44

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Solution

The fourth proportional to 2,078.68, 2,872.38 and 1,977.44 is: 2,732.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.68 : 2,872.38 = 1,977.44 : x
  2. Step 2: Convert to fraction form
    2,078.68/2,872.38 = 1,977.44/x
  3. Step 3: Cross multiply
    2,078.68x = 2,872.38 × 1,977.44
  4. Step 4: Simplify right side
    2,078.68x = 5,679,959.11
  5. Step 5: Solve for x
    x = 5,679,959.11/2,078.68
  6. Step 6: Final answer
    x = 2,732.48

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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.