Home / 3,999.68-5,517.06-2,878.84

Finding the Fourth Proportional to 3,999.68, 5,517.06 and 2,878.84

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Solution

The fourth proportional to 3,999.68, 5,517.06 and 2,878.84 is: 3,971.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.68 : 5,517.06 = 2,878.84 : x
  2. Step 2: Convert to fraction form
    3,999.68/5,517.06 = 2,878.84/x
  3. Step 3: Cross multiply
    3,999.68x = 5,517.06 × 2,878.84
  4. Step 4: Simplify right side
    3,999.68x = 15,882,745.30
  5. Step 5: Solve for x
    x = 15,882,745.30/3,999.68
  6. Step 6: Final answer
    x = 3,971.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.