Home / 7,945.07-11,921.45-5,620.02

Finding the Fourth Proportional to 7,945.07, 11,921.45 and 5,620.02

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Solution

The fourth proportional to 7,945.07, 11,921.45 and 5,620.02 is: 8,432.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.07 : 11,921.45 = 5,620.02 : x
  2. Step 2: Convert to fraction form
    7,945.07/11,921.45 = 5,620.02/x
  3. Step 3: Cross multiply
    7,945.07x = 11,921.45 × 5,620.02
  4. Step 4: Simplify right side
    7,945.07x = 66,998,759.33
  5. Step 5: Solve for x
    x = 66,998,759.33/7,945.07
  6. Step 6: Final answer
    x = 8,432.75

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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.