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Finding the Fourth Proportional to 8,479.96, 12,711.44 and 4,029.78

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Solution

The fourth proportional to 8,479.96, 12,711.44 and 4,029.78 is: 6,040.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.96 : 12,711.44 = 4,029.78 : x
  2. Step 2: Convert to fraction form
    8,479.96/12,711.44 = 4,029.78/x
  3. Step 3: Cross multiply
    8,479.96x = 12,711.44 × 4,029.78
  4. Step 4: Simplify right side
    8,479.96x = 51,224,306.68
  5. Step 5: Solve for x
    x = 51,224,306.68/8,479.96
  6. Step 6: Final answer
    x = 6,040.63

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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.