Home / 2,079.24-3,118.66-618.28

Finding the Fourth Proportional to 2,079.24, 3,118.66 and 618.28

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Solution

The fourth proportional to 2,079.24, 3,118.66 and 618.28 is: 927.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.24 : 3,118.66 = 618.28 : x
  2. Step 2: Convert to fraction form
    2,079.24/3,118.66 = 618.28/x
  3. Step 3: Cross multiply
    2,079.24x = 3,118.66 × 618.28
  4. Step 4: Simplify right side
    2,079.24x = 1,928,205.10
  5. Step 5: Solve for x
    x = 1,928,205.10/2,079.24
  6. Step 6: Final answer
    x = 927.36

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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.