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Finding the Fourth Proportional to 2,736.63, 4,104.41 and 788.40

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Solution

The fourth proportional to 2,736.63, 4,104.41 and 788.40 is: 1,182.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,736.63 : 4,104.41 = 788.40 : x
  2. Step 2: Convert to fraction form
    2,736.63/4,104.41 = 788.40/x
  3. Step 3: Cross multiply
    2,736.63x = 4,104.41 × 788.40
  4. Step 4: Simplify right side
    2,736.63x = 3,235,912.90
  5. Step 5: Solve for x
    x = 3,235,912.90/2,736.63
  6. Step 6: Final answer
    x = 1,182.44

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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.