Home / 2,015.19-3,022.50-628.20

Finding the Fourth Proportional to 2,015.19, 3,022.50 and 628.20

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Solution

The fourth proportional to 2,015.19, 3,022.50 and 628.20 is: 942.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.19 : 3,022.50 = 628.20 : x
  2. Step 2: Convert to fraction form
    2,015.19/3,022.50 = 628.20/x
  3. Step 3: Cross multiply
    2,015.19x = 3,022.50 × 628.20
  4. Step 4: Simplify right side
    2,015.19x = 1,898,734.50
  5. Step 5: Solve for x
    x = 1,898,734.50/2,015.19
  6. Step 6: Final answer
    x = 942.21

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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.