Home / 3,678.35-5,078.39-2,530.51

Finding the Fourth Proportional to 3,678.35, 5,078.39 and 2,530.51

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Solution

The fourth proportional to 3,678.35, 5,078.39 and 2,530.51 is: 3,493.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.35 : 5,078.39 = 2,530.51 : x
  2. Step 2: Convert to fraction form
    3,678.35/5,078.39 = 2,530.51/x
  3. Step 3: Cross multiply
    3,678.35x = 5,078.39 × 2,530.51
  4. Step 4: Simplify right side
    3,678.35x = 12,850,891.33
  5. Step 5: Solve for x
    x = 12,850,891.33/3,678.35
  6. Step 6: Final answer
    x = 3,493.66

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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.