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Finding the Fourth Proportional to 8,616.78, 12,926.38 and 4,234.41

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Solution

The fourth proportional to 8,616.78, 12,926.38 and 4,234.41 is: 6,352.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.78 : 12,926.38 = 4,234.41 : x
  2. Step 2: Convert to fraction form
    8,616.78/12,926.38 = 4,234.41/x
  3. Step 3: Cross multiply
    8,616.78x = 12,926.38 × 4,234.41
  4. Step 4: Simplify right side
    8,616.78x = 54,735,592.74
  5. Step 5: Solve for x
    x = 54,735,592.74/8,616.78
  6. Step 6: Final answer
    x = 6,352.21

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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.