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Finding the Fourth Proportional to 8,770.80, 13,155.78 and 3,223.72

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Solution

The fourth proportional to 8,770.80, 13,155.78 and 3,223.72 is: 4,835.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,770.80 : 13,155.78 = 3,223.72 : x
  2. Step 2: Convert to fraction form
    8,770.80/13,155.78 = 3,223.72/x
  3. Step 3: Cross multiply
    8,770.80x = 13,155.78 × 3,223.72
  4. Step 4: Simplify right side
    8,770.80x = 42,410,551.10
  5. Step 5: Solve for x
    x = 42,410,551.10/8,770.80
  6. Step 6: Final answer
    x = 4,835.43

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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.