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Finding the Fourth Proportional to 4,992.89, 6,887.13 and 3,199.76

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Solution

The fourth proportional to 4,992.89, 6,887.13 and 3,199.76 is: 4,413.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,992.89 : 6,887.13 = 3,199.76 : x
  2. Step 2: Convert to fraction form
    4,992.89/6,887.13 = 3,199.76/x
  3. Step 3: Cross multiply
    4,992.89x = 6,887.13 × 3,199.76
  4. Step 4: Simplify right side
    4,992.89x = 22,037,147.09
  5. Step 5: Solve for x
    x = 22,037,147.09/4,992.89
  6. Step 6: Final answer
    x = 4,413.71

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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.