Home / 7,839.86-11,759.76-2,645.73

Finding the Fourth Proportional to 7,839.86, 11,759.76 and 2,645.73

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Solution

The fourth proportional to 7,839.86, 11,759.76 and 2,645.73 is: 3,968.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839.86 : 11,759.76 = 2,645.73 : x
  2. Step 2: Convert to fraction form
    7,839.86/11,759.76 = 2,645.73/x
  3. Step 3: Cross multiply
    7,839.86x = 11,759.76 × 2,645.73
  4. Step 4: Simplify right side
    7,839.86x = 31,113,149.82
  5. Step 5: Solve for x
    x = 31,113,149.82/7,839.86
  6. Step 6: Final answer
    x = 3,968.59

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1.5x scale

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.