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Finding the Fourth Proportional to 8,079.68, 12,122.16 and 3,401.84

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Solution

The fourth proportional to 8,079.68, 12,122.16 and 3,401.84 is: 5,103.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.68 : 12,122.16 = 3,401.84 : x
  2. Step 2: Convert to fraction form
    8,079.68/12,122.16 = 3,401.84/x
  3. Step 3: Cross multiply
    8,079.68x = 12,122.16 × 3,401.84
  4. Step 4: Simplify right side
    8,079.68x = 41,237,648.77
  5. Step 5: Solve for x
    x = 41,237,648.77/8,079.68
  6. Step 6: Final answer
    x = 5,103.87

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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.