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Finding the Fourth Proportional to 8,890.34, 13,336.17 and 2,649.87

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Solution

The fourth proportional to 8,890.34, 13,336.17 and 2,649.87 is: 3,975.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,890.34 : 13,336.17 = 2,649.87 : x
  2. Step 2: Convert to fraction form
    8,890.34/13,336.17 = 2,649.87/x
  3. Step 3: Cross multiply
    8,890.34x = 13,336.17 × 2,649.87
  4. Step 4: Simplify right side
    8,890.34x = 35,339,116.80
  5. Step 5: Solve for x
    x = 35,339,116.80/8,890.34
  6. Step 6: Final answer
    x = 3,975.00

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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.