Home / 2,079.45-3,119.19-618.60

Finding the Fourth Proportional to 2,079.45, 3,119.19 and 618.60

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Solution

The fourth proportional to 2,079.45, 3,119.19 and 618.60 is: 927.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.45 : 3,119.19 = 618.60 : x
  2. Step 2: Convert to fraction form
    2,079.45/3,119.19 = 618.60/x
  3. Step 3: Cross multiply
    2,079.45x = 3,119.19 × 618.60
  4. Step 4: Simplify right side
    2,079.45x = 1,929,530.93
  5. Step 5: Solve for x
    x = 1,929,530.93/2,079.45
  6. Step 6: Final answer
    x = 927.90

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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.