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Finding the Fourth Proportional to 8,608.98, 12,921.57 and 4,229.58

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Solution

The fourth proportional to 8,608.98, 12,921.57 and 4,229.58 is: 6,348.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.98 : 12,921.57 = 4,229.58 : x
  2. Step 2: Convert to fraction form
    8,608.98/12,921.57 = 4,229.58/x
  3. Step 3: Cross multiply
    8,608.98x = 12,921.57 × 4,229.58
  4. Step 4: Simplify right side
    8,608.98x = 54,652,814.04
  5. Step 5: Solve for x
    x = 54,652,814.04/8,608.98
  6. Step 6: Final answer
    x = 6,348.35

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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.