Home / 3,680.86-5,078.14-2,108.11

Finding the Fourth Proportional to 3,680.86, 5,078.14 and 2,108.11

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Solution

The fourth proportional to 3,680.86, 5,078.14 and 2,108.11 is: 2,908.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.86 : 5,078.14 = 2,108.11 : x
  2. Step 2: Convert to fraction form
    3,680.86/5,078.14 = 2,108.11/x
  3. Step 3: Cross multiply
    3,680.86x = 5,078.14 × 2,108.11
  4. Step 4: Simplify right side
    3,680.86x = 10,705,277.72
  5. Step 5: Solve for x
    x = 10,705,277.72/3,680.86
  6. Step 6: Final answer
    x = 2,908.36

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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.