Home / 2,079.38-3,118.14-618.02

Finding the Fourth Proportional to 2,079.38, 3,118.14 and 618.02

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Solution

The fourth proportional to 2,079.38, 3,118.14 and 618.02 is: 926.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.38 : 3,118.14 = 618.02 : x
  2. Step 2: Convert to fraction form
    2,079.38/3,118.14 = 618.02/x
  3. Step 3: Cross multiply
    2,079.38x = 3,118.14 × 618.02
  4. Step 4: Simplify right side
    2,079.38x = 1,927,072.88
  5. Step 5: Solve for x
    x = 1,927,072.88/2,079.38
  6. Step 6: Final answer
    x = 926.75

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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.