Home / 2,015.15-3,022.95-628.16

Finding the Fourth Proportional to 2,015.15, 3,022.95 and 628.16

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Solution

The fourth proportional to 2,015.15, 3,022.95 and 628.16 is: 942.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.15 : 3,022.95 = 628.16 : x
  2. Step 2: Convert to fraction form
    2,015.15/3,022.95 = 628.16/x
  3. Step 3: Cross multiply
    2,015.15x = 3,022.95 × 628.16
  4. Step 4: Simplify right side
    2,015.15x = 1,898,896.27
  5. Step 5: Solve for x
    x = 1,898,896.27/2,015.15
  6. Step 6: Final answer
    x = 942.31

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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.