Home / 2,519.12-3,779.37-764.18

Finding the Fourth Proportional to 2,519.12, 3,779.37 and 764.18

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Solution

The fourth proportional to 2,519.12, 3,779.37 and 764.18 is: 1,146.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,519.12 : 3,779.37 = 764.18 : x
  2. Step 2: Convert to fraction form
    2,519.12/3,779.37 = 764.18/x
  3. Step 3: Cross multiply
    2,519.12x = 3,779.37 × 764.18
  4. Step 4: Simplify right side
    2,519.12x = 2,888,103.57
  5. Step 5: Solve for x
    x = 2,888,103.57/2,519.12
  6. Step 6: Final answer
    x = 1,146.48

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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.