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Finding the Fourth Proportional to 28,250, 42,375 and 9,782

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Solution

The fourth proportional to 28,250, 42,375 and 9,782 is: 14,673

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,250 : 42,375 = 9,782 : x
  2. Step 2: Convert to fraction form
    28,250/42,375 = 9,782/x
  3. Step 3: Cross multiply
    28,250x = 42,375 × 9,782
  4. Step 4: Simplify right side
    28,250x = 414,512,250
  5. Step 5: Solve for x
    x = 414,512,250/28,250
  6. Step 6: Final answer
    x = 14,673

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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.