Home / 8,451.62-12,679.35-2,608.70

Finding the Fourth Proportional to 8,451.62, 12,679.35 and 2,608.70

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Solution

The fourth proportional to 8,451.62, 12,679.35 and 2,608.70 is: 3,913.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.62 : 12,679.35 = 2,608.70 : x
  2. Step 2: Convert to fraction form
    8,451.62/12,679.35 = 2,608.70/x
  3. Step 3: Cross multiply
    8,451.62x = 12,679.35 × 2,608.70
  4. Step 4: Simplify right side
    8,451.62x = 33,076,620.35
  5. Step 5: Solve for x
    x = 33,076,620.35/8,451.62
  6. Step 6: Final answer
    x = 3,913.64

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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.