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Finding the Fourth Proportional to 2,249.76, 3,104.84 and 1,305.80

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Solution

The fourth proportional to 2,249.76, 3,104.84 and 1,305.80 is: 1,802.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,249.76 : 3,104.84 = 1,305.80 : x
  2. Step 2: Convert to fraction form
    2,249.76/3,104.84 = 1,305.80/x
  3. Step 3: Cross multiply
    2,249.76x = 3,104.84 × 1,305.80
  4. Step 4: Simplify right side
    2,249.76x = 4,054,311.10
  5. Step 5: Solve for x
    x = 4,054,311.10/2,249.76
  6. Step 6: Final answer
    x = 1,802.11

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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.