Home / 2,611.44-3,914.40-1,993.80

Finding the Fourth Proportional to 2,611.44, 3,914.40 and 1,993.80

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Solution

The fourth proportional to 2,611.44, 3,914.40 and 1,993.80 is: 2,988.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.44 : 3,914.40 = 1,993.80 : x
  2. Step 2: Convert to fraction form
    2,611.44/3,914.40 = 1,993.80/x
  3. Step 3: Cross multiply
    2,611.44x = 3,914.40 × 1,993.80
  4. Step 4: Simplify right side
    2,611.44x = 7,804,530.72
  5. Step 5: Solve for x
    x = 7,804,530.72/2,611.44
  6. Step 6: Final answer
    x = 2,988.59

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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.