Home / 7,945.80-11,922.22-2,755.40

Finding the Fourth Proportional to 7,945.80, 11,922.22 and 2,755.40

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Solution

The fourth proportional to 7,945.80, 11,922.22 and 2,755.40 is: 4,134.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.80 : 11,922.22 = 2,755.40 : x
  2. Step 2: Convert to fraction form
    7,945.80/11,922.22 = 2,755.40/x
  3. Step 3: Cross multiply
    7,945.80x = 11,922.22 × 2,755.40
  4. Step 4: Simplify right side
    7,945.80x = 32,850,484.99
  5. Step 5: Solve for x
    x = 32,850,484.99/7,945.80
  6. Step 6: Final answer
    x = 4,134.32

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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.