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Finding the Fourth Proportional to 8,815.08, 13,212.90 and 3,616.50

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Solution

The fourth proportional to 8,815.08, 13,212.90 and 3,616.50 is: 5,420.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.08 : 13,212.90 = 3,616.50 : x
  2. Step 2: Convert to fraction form
    8,815.08/13,212.90 = 3,616.50/x
  3. Step 3: Cross multiply
    8,815.08x = 13,212.90 × 3,616.50
  4. Step 4: Simplify right side
    8,815.08x = 47,784,452.85
  5. Step 5: Solve for x
    x = 47,784,452.85/8,815.08
  6. Step 6: Final answer
    x = 5,420.76

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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.