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Finding the Fourth Proportional to 2,736.28, 4,104.75 and 788.50

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Solution

The fourth proportional to 2,736.28, 4,104.75 and 788.50 is: 1,182.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,736.28 : 4,104.75 = 788.50 : x
  2. Step 2: Convert to fraction form
    2,736.28/4,104.75 = 788.50/x
  3. Step 3: Cross multiply
    2,736.28x = 4,104.75 × 788.50
  4. Step 4: Simplify right side
    2,736.28x = 3,236,595.38
  5. Step 5: Solve for x
    x = 3,236,595.38/2,736.28
  6. Step 6: Final answer
    x = 1,182.85

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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.