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Finding the Fourth Proportional to 28,828, 43,242 and 6,940

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Solution

The fourth proportional to 28,828, 43,242 and 6,940 is: 10,410

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,828 : 43,242 = 6,940 : x
  2. Step 2: Convert to fraction form
    28,828/43,242 = 6,940/x
  3. Step 3: Cross multiply
    28,828x = 43,242 × 6,940
  4. Step 4: Simplify right side
    28,828x = 300,099,480
  5. Step 5: Solve for x
    x = 300,099,480/28,828
  6. Step 6: Final answer
    x = 10,410

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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.