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Finding the Fourth Proportional to 3,028.50, 4,542.75 and 976.50

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Solution

The fourth proportional to 3,028.50, 4,542.75 and 976.50 is: 1,464.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,028.50 : 4,542.75 = 976.50 : x
  2. Step 2: Convert to fraction form
    3,028.50/4,542.75 = 976.50/x
  3. Step 3: Cross multiply
    3,028.50x = 4,542.75 × 976.50
  4. Step 4: Simplify right side
    3,028.50x = 4,435,995.38
  5. Step 5: Solve for x
    x = 4,435,995.38/3,028.50
  6. Step 6: Final answer
    x = 1,464.75

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Double scale
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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.