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Finding the Fourth Proportional to 7,928.03, 11,879.69 and 2,994.98

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Solution

The fourth proportional to 7,928.03, 11,879.69 and 2,994.98 is: 4,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.03 : 11,879.69 = 2,994.98 : x
  2. Step 2: Convert to fraction form
    7,928.03/11,879.69 = 2,994.98/x
  3. Step 3: Cross multiply
    7,928.03x = 11,879.69 × 2,994.98
  4. Step 4: Simplify right side
    7,928.03x = 35,579,433.96
  5. Step 5: Solve for x
    x = 35,579,433.96/7,928.03
  6. Step 6: Final answer
    x = 4,487.80

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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.