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Finding the Fourth Proportional to 8,451.64, 12,676.70 and 2,211.71

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Solution

The fourth proportional to 8,451.64, 12,676.70 and 2,211.71 is: 3,317.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.64 : 12,676.70 = 2,211.71 : x
  2. Step 2: Convert to fraction form
    8,451.64/12,676.70 = 2,211.71/x
  3. Step 3: Cross multiply
    8,451.64x = 12,676.70 × 2,211.71
  4. Step 4: Simplify right side
    8,451.64x = 28,037,126.30
  5. Step 5: Solve for x
    x = 28,037,126.30/8,451.64
  6. Step 6: Final answer
    x = 3,317.36

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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.