Home / 2,638.06-3,641.08-1,519.78

Finding the Fourth Proportional to 2,638.06, 3,641.08 and 1,519.78

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Solution

The fourth proportional to 2,638.06, 3,641.08 and 1,519.78 is: 2,097.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.06 : 3,641.08 = 1,519.78 : x
  2. Step 2: Convert to fraction form
    2,638.06/3,641.08 = 1,519.78/x
  3. Step 3: Cross multiply
    2,638.06x = 3,641.08 × 1,519.78
  4. Step 4: Simplify right side
    2,638.06x = 5,533,640.56
  5. Step 5: Solve for x
    x = 5,533,640.56/2,638.06
  6. Step 6: Final answer
    x = 2,097.62

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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.