Home / 8,078.96-12,103.56-4,187.60

Finding the Fourth Proportional to 8,078.96, 12,103.56 and 4,187.60

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Solution

The fourth proportional to 8,078.96, 12,103.56 and 4,187.60 is: 6,273.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.96 : 12,103.56 = 4,187.60 : x
  2. Step 2: Convert to fraction form
    8,078.96/12,103.56 = 4,187.60/x
  3. Step 3: Cross multiply
    8,078.96x = 12,103.56 × 4,187.60
  4. Step 4: Simplify right side
    8,078.96x = 50,684,867.86
  5. Step 5: Solve for x
    x = 50,684,867.86/8,078.96
  6. Step 6: Final answer
    x = 6,273.69

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1.5x scale

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.