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Finding the Fourth Proportional to 5,009.85, 6,942.78 and 4,939.38

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Solution

The fourth proportional to 5,009.85, 6,942.78 and 4,939.38 is: 6,845.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,009.85 : 6,942.78 = 4,939.38 : x
  2. Step 2: Convert to fraction form
    5,009.85/6,942.78 = 4,939.38/x
  3. Step 3: Cross multiply
    5,009.85x = 6,942.78 × 4,939.38
  4. Step 4: Simplify right side
    5,009.85x = 34,293,028.68
  5. Step 5: Solve for x
    x = 34,293,028.68/5,009.85
  6. Step 6: Final answer
    x = 6,845.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.