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Finding the Fourth Proportional to 2,618.38, 3,927.57 and 769.54

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Solution

The fourth proportional to 2,618.38, 3,927.57 and 769.54 is: 1,154.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.38 : 3,927.57 = 769.54 : x
  2. Step 2: Convert to fraction form
    2,618.38/3,927.57 = 769.54/x
  3. Step 3: Cross multiply
    2,618.38x = 3,927.57 × 769.54
  4. Step 4: Simplify right side
    2,618.38x = 3,022,422.22
  5. Step 5: Solve for x
    x = 3,022,422.22/2,618.38
  6. Step 6: Final answer
    x = 1,154.31

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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.