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Finding the Fourth Proportional to 8,813, 13,219.58 and 2,889.80

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Solution

The fourth proportional to 8,813, 13,219.58 and 2,889.80 is: 4,334.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813 : 13,219.58 = 2,889.80 : x
  2. Step 2: Convert to fraction form
    8,813/13,219.58 = 2,889.80/x
  3. Step 3: Cross multiply
    8,813x = 13,219.58 × 2,889.80
  4. Step 4: Simplify right side
    8,813x = 38,201,942.28
  5. Step 5: Solve for x
    x = 38,201,942.28/8,813
  6. Step 6: Final answer
    x = 4,334.73

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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.