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Finding the Fourth Proportional to 8,367.72, 12,551.16 and 2,821.12

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Solution

The fourth proportional to 8,367.72, 12,551.16 and 2,821.12 is: 4,231.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,367.72 : 12,551.16 = 2,821.12 : x
  2. Step 2: Convert to fraction form
    8,367.72/12,551.16 = 2,821.12/x
  3. Step 3: Cross multiply
    8,367.72x = 12,551.16 × 2,821.12
  4. Step 4: Simplify right side
    8,367.72x = 35,408,328.50
  5. Step 5: Solve for x
    x = 35,408,328.50/8,367.72
  6. Step 6: Final answer
    x = 4,231.54

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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.