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Finding the Fourth Proportional to 2,015.22, 3,020.12 and 919.02

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Solution

The fourth proportional to 2,015.22, 3,020.12 and 919.02 is: 1,377.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.22 : 3,020.12 = 919.02 : x
  2. Step 2: Convert to fraction form
    2,015.22/3,020.12 = 919.02/x
  3. Step 3: Cross multiply
    2,015.22x = 3,020.12 × 919.02
  4. Step 4: Simplify right side
    2,015.22x = 2,775,550.68
  5. Step 5: Solve for x
    x = 2,775,550.68/2,015.22
  6. Step 6: Final answer
    x = 1,377.29

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1.5x scale

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.