Home / 5,388.15-8,078.91-2,097.42

Finding the Fourth Proportional to 5,388.15, 8,078.91 and 2,097.42

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Solution

The fourth proportional to 5,388.15, 8,078.91 and 2,097.42 is: 3,144.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.15 : 8,078.91 = 2,097.42 : x
  2. Step 2: Convert to fraction form
    5,388.15/8,078.91 = 2,097.42/x
  3. Step 3: Cross multiply
    5,388.15x = 8,078.91 × 2,097.42
  4. Step 4: Simplify right side
    5,388.15x = 16,944,867.41
  5. Step 5: Solve for x
    x = 16,944,867.41/5,388.15
  6. Step 6: Final answer
    x = 3,144.84

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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.