Home / 8,451.16-12,679.20-2,608.72

Finding the Fourth Proportional to 8,451.16, 12,679.20 and 2,608.72

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Solution

The fourth proportional to 8,451.16, 12,679.20 and 2,608.72 is: 3,913.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.16 : 12,679.20 = 2,608.72 : x
  2. Step 2: Convert to fraction form
    8,451.16/12,679.20 = 2,608.72/x
  3. Step 3: Cross multiply
    8,451.16x = 12,679.20 × 2,608.72
  4. Step 4: Simplify right side
    8,451.16x = 33,076,482.62
  5. Step 5: Solve for x
    x = 33,076,482.62/8,451.16
  6. Step 6: Final answer
    x = 3,913.84

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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.