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Finding the Fourth Proportional to 8,709.69, 13,043.78 and 4,755.03

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Solution

The fourth proportional to 8,709.69, 13,043.78 and 4,755.03 is: 7,121.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.69 : 13,043.78 = 4,755.03 : x
  2. Step 2: Convert to fraction form
    8,709.69/13,043.78 = 4,755.03/x
  3. Step 3: Cross multiply
    8,709.69x = 13,043.78 × 4,755.03
  4. Step 4: Simplify right side
    8,709.69x = 62,023,565.21
  5. Step 5: Solve for x
    x = 62,023,565.21/8,709.69
  6. Step 6: Final answer
    x = 7,121.21

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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.