Home / 8,149.79-12,225.45-3,405.38

Finding the Fourth Proportional to 8,149.79, 12,225.45 and 3,405.38

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Solution

The fourth proportional to 8,149.79, 12,225.45 and 3,405.38 is: 5,108.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,149.79 : 12,225.45 = 3,405.38 : x
  2. Step 2: Convert to fraction form
    8,149.79/12,225.45 = 3,405.38/x
  3. Step 3: Cross multiply
    8,149.79x = 12,225.45 × 3,405.38
  4. Step 4: Simplify right side
    8,149.79x = 41,632,254.56
  5. Step 5: Solve for x
    x = 41,632,254.56/8,149.79
  6. Step 6: Final answer
    x = 5,108.38

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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.