Home / 2,015.38-3,023.10-628.70

Finding the Fourth Proportional to 2,015.38, 3,023.10 and 628.70

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Solution

The fourth proportional to 2,015.38, 3,023.10 and 628.70 is: 943.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.38 : 3,023.10 = 628.70 : x
  2. Step 2: Convert to fraction form
    2,015.38/3,023.10 = 628.70/x
  3. Step 3: Cross multiply
    2,015.38x = 3,023.10 × 628.70
  4. Step 4: Simplify right side
    2,015.38x = 1,900,622.97
  5. Step 5: Solve for x
    x = 1,900,622.97/2,015.38
  6. Step 6: Final answer
    x = 943.06

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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.