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Finding the Fourth Proportional to 8,865.30, 13,299.90 and 2,625.80

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Solution

The fourth proportional to 8,865.30, 13,299.90 and 2,625.80 is: 3,939.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.30 : 13,299.90 = 2,625.80 : x
  2. Step 2: Convert to fraction form
    8,865.30/13,299.90 = 2,625.80/x
  3. Step 3: Cross multiply
    8,865.30x = 13,299.90 × 2,625.80
  4. Step 4: Simplify right side
    8,865.30x = 34,922,877.42
  5. Step 5: Solve for x
    x = 34,922,877.42/8,865.30
  6. Step 6: Final answer
    x = 3,939.28

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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.