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Finding the Fourth Proportional to 8,811.37, 13,217.06 and 4,427.79

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Solution

The fourth proportional to 8,811.37, 13,217.06 and 4,427.79 is: 6,641.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.37 : 13,217.06 = 4,427.79 : x
  2. Step 2: Convert to fraction form
    8,811.37/13,217.06 = 4,427.79/x
  3. Step 3: Cross multiply
    8,811.37x = 13,217.06 × 4,427.79
  4. Step 4: Simplify right side
    8,811.37x = 58,522,366.10
  5. Step 5: Solve for x
    x = 58,522,366.10/8,811.37
  6. Step 6: Final answer
    x = 6,641.69

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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.