Home / 8,112.54-12,170.43-3,432.54

Finding the Fourth Proportional to 8,112.54, 12,170.43 and 3,432.54

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Solution

The fourth proportional to 8,112.54, 12,170.43 and 3,432.54 is: 5,149.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.54 : 12,170.43 = 3,432.54 : x
  2. Step 2: Convert to fraction form
    8,112.54/12,170.43 = 3,432.54/x
  3. Step 3: Cross multiply
    8,112.54x = 12,170.43 × 3,432.54
  4. Step 4: Simplify right side
    8,112.54x = 41,775,487.79
  5. Step 5: Solve for x
    x = 41,775,487.79/8,112.54
  6. Step 6: Final answer
    x = 5,149.50

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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.