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Finding the Fourth Proportional to 6,992.45, 9,649.44 and 3,805.70

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Solution

The fourth proportional to 6,992.45, 9,649.44 and 3,805.70 is: 5,251.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,992.45 : 9,649.44 = 3,805.70 : x
  2. Step 2: Convert to fraction form
    6,992.45/9,649.44 = 3,805.70/x
  3. Step 3: Cross multiply
    6,992.45x = 9,649.44 × 3,805.70
  4. Step 4: Simplify right side
    6,992.45x = 36,722,825.56
  5. Step 5: Solve for x
    x = 36,722,825.56/6,992.45
  6. Step 6: Final answer
    x = 5,251.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.