Home / 7,839.76-11,759.34-2,645.56

Finding the Fourth Proportional to 7,839.76, 11,759.34 and 2,645.56

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Solution

The fourth proportional to 7,839.76, 11,759.34 and 2,645.56 is: 3,968.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839.76 : 11,759.34 = 2,645.56 : x
  2. Step 2: Convert to fraction form
    7,839.76/11,759.34 = 2,645.56/x
  3. Step 3: Cross multiply
    7,839.76x = 11,759.34 × 2,645.56
  4. Step 4: Simplify right side
    7,839.76x = 31,110,039.53
  5. Step 5: Solve for x
    x = 31,110,039.53/7,839.76
  6. Step 6: Final answer
    x = 3,968.24

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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.