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Finding the Fourth Proportional to 2,758.62, 4,137.93 and 1,784.19

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Solution

The fourth proportional to 2,758.62, 4,137.93 and 1,784.19 is: 2,676.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.62 : 4,137.93 = 1,784.19 : x
  2. Step 2: Convert to fraction form
    2,758.62/4,137.93 = 1,784.19/x
  3. Step 3: Cross multiply
    2,758.62x = 4,137.93 × 1,784.19
  4. Step 4: Simplify right side
    2,758.62x = 7,382,853.33
  5. Step 5: Solve for x
    x = 7,382,853.33/2,758.62
  6. Step 6: Final answer
    x = 2,676.29

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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.