Home / 8,281.22-12,424.39-2,872.05

Finding the Fourth Proportional to 8,281.22, 12,424.39 and 2,872.05

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Solution

The fourth proportional to 8,281.22, 12,424.39 and 2,872.05 is: 4,308.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,281.22 : 12,424.39 = 2,872.05 : x
  2. Step 2: Convert to fraction form
    8,281.22/12,424.39 = 2,872.05/x
  3. Step 3: Cross multiply
    8,281.22x = 12,424.39 × 2,872.05
  4. Step 4: Simplify right side
    8,281.22x = 35,683,469.30
  5. Step 5: Solve for x
    x = 35,683,469.30/8,281.22
  6. Step 6: Final answer
    x = 4,308.96

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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.