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Finding the Fourth Proportional to 2,855.09, 4,284.06 and 1,928.62

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Solution

The fourth proportional to 2,855.09, 4,284.06 and 1,928.62 is: 2,893.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.09 : 4,284.06 = 1,928.62 : x
  2. Step 2: Convert to fraction form
    2,855.09/4,284.06 = 1,928.62/x
  3. Step 3: Cross multiply
    2,855.09x = 4,284.06 × 1,928.62
  4. Step 4: Simplify right side
    2,855.09x = 8,262,313.09
  5. Step 5: Solve for x
    x = 8,262,313.09/2,855.09
  6. Step 6: Final answer
    x = 2,893.89

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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.