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Finding the Fourth Proportional to 8,755.60, 13,138.44 and 4,859.68

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Solution

The fourth proportional to 8,755.60, 13,138.44 and 4,859.68 is: 7,292.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.60 : 13,138.44 = 4,859.68 : x
  2. Step 2: Convert to fraction form
    8,755.60/13,138.44 = 4,859.68/x
  3. Step 3: Cross multiply
    8,755.60x = 13,138.44 × 4,859.68
  4. Step 4: Simplify right side
    8,755.60x = 63,848,614.10
  5. Step 5: Solve for x
    x = 63,848,614.10/8,755.60
  6. Step 6: Final answer
    x = 7,292.32

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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.