Home / 2,018.70-3,028.23-720.18

Finding the Fourth Proportional to 2,018.70, 3,028.23 and 720.18

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Solution

The fourth proportional to 2,018.70, 3,028.23 and 720.18 is: 1,080.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,018.70 : 3,028.23 = 720.18 : x
  2. Step 2: Convert to fraction form
    2,018.70/3,028.23 = 720.18/x
  3. Step 3: Cross multiply
    2,018.70x = 3,028.23 × 720.18
  4. Step 4: Simplify right side
    2,018.70x = 2,180,870.68
  5. Step 5: Solve for x
    x = 2,180,870.68/2,018.70
  6. Step 6: Final answer
    x = 1,080.33

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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.