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Finding the Fourth Proportional to 8,811.75, 13,221.93 and 3,880.77

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Solution

The fourth proportional to 8,811.75, 13,221.93 and 3,880.77 is: 5,823.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.75 : 13,221.93 = 3,880.77 : x
  2. Step 2: Convert to fraction form
    8,811.75/13,221.93 = 3,880.77/x
  3. Step 3: Cross multiply
    8,811.75x = 13,221.93 × 3,880.77
  4. Step 4: Simplify right side
    8,811.75x = 51,311,269.29
  5. Step 5: Solve for x
    x = 51,311,269.29/8,811.75
  6. Step 6: Final answer
    x = 5,823.05

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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.