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Finding the Fourth Proportional to 4,990.22, 6,882.99 and 4,290.38

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Solution

The fourth proportional to 4,990.22, 6,882.99 and 4,290.38 is: 5,917.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.22 : 6,882.99 = 4,290.38 : x
  2. Step 2: Convert to fraction form
    4,990.22/6,882.99 = 4,290.38/x
  3. Step 3: Cross multiply
    4,990.22x = 6,882.99 × 4,290.38
  4. Step 4: Simplify right side
    4,990.22x = 29,530,608.22
  5. Step 5: Solve for x
    x = 29,530,608.22/4,990.22
  6. Step 6: Final answer
    x = 5,917.70

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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.