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Finding the Fourth Proportional to 8,811.12, 13,216.90 and 2,967.73

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Solution

The fourth proportional to 8,811.12, 13,216.90 and 2,967.73 is: 4,451.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.12 : 13,216.90 = 2,967.73 : x
  2. Step 2: Convert to fraction form
    8,811.12/13,216.90 = 2,967.73/x
  3. Step 3: Cross multiply
    8,811.12x = 13,216.90 × 2,967.73
  4. Step 4: Simplify right side
    8,811.12x = 39,224,190.64
  5. Step 5: Solve for x
    x = 39,224,190.64/8,811.12
  6. Step 6: Final answer
    x = 4,451.67

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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.