Home / 2,720.03-4,078.82-1,678.43

Finding the Fourth Proportional to 2,720.03, 4,078.82 and 1,678.43

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Solution

The fourth proportional to 2,720.03, 4,078.82 and 1,678.43 is: 2,516.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.03 : 4,078.82 = 1,678.43 : x
  2. Step 2: Convert to fraction form
    2,720.03/4,078.82 = 1,678.43/x
  3. Step 3: Cross multiply
    2,720.03x = 4,078.82 × 1,678.43
  4. Step 4: Simplify right side
    2,720.03x = 6,846,028.25
  5. Step 5: Solve for x
    x = 6,846,028.25/2,720.03
  6. Step 6: Final answer
    x = 2,516.90

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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.