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Finding the Fourth Proportional to 2,651.90, 3,979.13 and 1,093.05

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Solution

The fourth proportional to 2,651.90, 3,979.13 and 1,093.05 is: 1,640.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.90 : 3,979.13 = 1,093.05 : x
  2. Step 2: Convert to fraction form
    2,651.90/3,979.13 = 1,093.05/x
  3. Step 3: Cross multiply
    2,651.90x = 3,979.13 × 1,093.05
  4. Step 4: Simplify right side
    2,651.90x = 4,349,382.58
  5. Step 5: Solve for x
    x = 4,349,382.58/2,651.90
  6. Step 6: Final answer
    x = 1,640.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.