Home / 8,078.48-12,112.60-3,397.20

Finding the Fourth Proportional to 8,078.48, 12,112.60 and 3,397.20

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Solution

The fourth proportional to 8,078.48, 12,112.60 and 3,397.20 is: 5,093.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.48 : 12,112.60 = 3,397.20 : x
  2. Step 2: Convert to fraction form
    8,078.48/12,112.60 = 3,397.20/x
  3. Step 3: Cross multiply
    8,078.48x = 12,112.60 × 3,397.20
  4. Step 4: Simplify right side
    8,078.48x = 41,148,924.72
  5. Step 5: Solve for x
    x = 41,148,924.72/8,078.48
  6. Step 6: Final answer
    x = 5,093.65

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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.