Home / 2,519.80-3,779.70-1,993.30

Finding the Fourth Proportional to 2,519.80, 3,779.70 and 1,993.30

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Solution

The fourth proportional to 2,519.80, 3,779.70 and 1,993.30 is: 2,989.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,519.80 : 3,779.70 = 1,993.30 : x
  2. Step 2: Convert to fraction form
    2,519.80/3,779.70 = 1,993.30/x
  3. Step 3: Cross multiply
    2,519.80x = 3,779.70 × 1,993.30
  4. Step 4: Simplify right side
    2,519.80x = 7,534,076.01
  5. Step 5: Solve for x
    x = 7,534,076.01/2,519.80
  6. Step 6: Final answer
    x = 2,989.95

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Similar ratio
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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.