Home / 7,839.92-11,759.16-2,645.84

Finding the Fourth Proportional to 7,839.92, 11,759.16 and 2,645.84

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Solution

The fourth proportional to 7,839.92, 11,759.16 and 2,645.84 is: 3,968.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839.92 : 11,759.16 = 2,645.84 : x
  2. Step 2: Convert to fraction form
    7,839.92/11,759.16 = 2,645.84/x
  3. Step 3: Cross multiply
    7,839.92x = 11,759.16 × 2,645.84
  4. Step 4: Simplify right side
    7,839.92x = 31,112,855.89
  5. Step 5: Solve for x
    x = 31,112,855.89/7,839.92
  6. Step 6: Final answer
    x = 3,968.52

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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.