Home / 2,079.17-3,118.70-618.33

Finding the Fourth Proportional to 2,079.17, 3,118.70 and 618.33

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Solution

The fourth proportional to 2,079.17, 3,118.70 and 618.33 is: 927.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.17 : 3,118.70 = 618.33 : x
  2. Step 2: Convert to fraction form
    2,079.17/3,118.70 = 618.33/x
  3. Step 3: Cross multiply
    2,079.17x = 3,118.70 × 618.33
  4. Step 4: Simplify right side
    2,079.17x = 1,928,399.01
  5. Step 5: Solve for x
    x = 1,928,399.01/2,079.17
  6. Step 6: Final answer
    x = 927.49

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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.