Home / 2,638.32-3,640.41-1,519.19

Finding the Fourth Proportional to 2,638.32, 3,640.41 and 1,519.19

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Solution

The fourth proportional to 2,638.32, 3,640.41 and 1,519.19 is: 2,096.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.32 : 3,640.41 = 1,519.19 : x
  2. Step 2: Convert to fraction form
    2,638.32/3,640.41 = 1,519.19/x
  3. Step 3: Cross multiply
    2,638.32x = 3,640.41 × 1,519.19
  4. Step 4: Simplify right side
    2,638.32x = 5,530,478.87
  5. Step 5: Solve for x
    x = 5,530,478.87/2,638.32
  6. Step 6: Final answer
    x = 2,096.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.