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Finding the Fourth Proportional to 2,249.76, 3,104.74 and 1,255.16

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Solution

The fourth proportional to 2,249.76, 3,104.74 and 1,255.16 is: 1,732.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,249.76 : 3,104.74 = 1,255.16 : x
  2. Step 2: Convert to fraction form
    2,249.76/3,104.74 = 1,255.16/x
  3. Step 3: Cross multiply
    2,249.76x = 3,104.74 × 1,255.16
  4. Step 4: Simplify right side
    2,249.76x = 3,896,945.46
  5. Step 5: Solve for x
    x = 3,896,945.46/2,249.76
  6. Step 6: Final answer
    x = 1,732.16

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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.