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Finding the Fourth Proportional to 2,249.64, 3,081.24 and 2,116.80

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Solution

The fourth proportional to 2,249.64, 3,081.24 and 2,116.80 is: 2,899.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,249.64 : 3,081.24 = 2,116.80 : x
  2. Step 2: Convert to fraction form
    2,249.64/3,081.24 = 2,116.80/x
  3. Step 3: Cross multiply
    2,249.64x = 3,081.24 × 2,116.80
  4. Step 4: Simplify right side
    2,249.64x = 6,522,368.83
  5. Step 5: Solve for x
    x = 6,522,368.83/2,249.64
  6. Step 6: Final answer
    x = 2,899.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.