Home / 2,079.30-3,118.97-618.47

Finding the Fourth Proportional to 2,079.30, 3,118.97 and 618.47

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Solution

The fourth proportional to 2,079.30, 3,118.97 and 618.47 is: 927.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.30 : 3,118.97 = 618.47 : x
  2. Step 2: Convert to fraction form
    2,079.30/3,118.97 = 618.47/x
  3. Step 3: Cross multiply
    2,079.30x = 3,118.97 × 618.47
  4. Step 4: Simplify right side
    2,079.30x = 1,928,987.02
  5. Step 5: Solve for x
    x = 1,928,987.02/2,079.30
  6. Step 6: Final answer
    x = 927.71

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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.