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Finding the Fourth Proportional to 6,618.98, 9,930.15 and 3,108.33

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Solution

The fourth proportional to 6,618.98, 9,930.15 and 3,108.33 is: 4,663.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,618.98 : 9,930.15 = 3,108.33 : x
  2. Step 2: Convert to fraction form
    6,618.98/9,930.15 = 3,108.33/x
  3. Step 3: Cross multiply
    6,618.98x = 9,930.15 × 3,108.33
  4. Step 4: Simplify right side
    6,618.98x = 30,866,183.15
  5. Step 5: Solve for x
    x = 30,866,183.15/6,618.98
  6. Step 6: Final answer
    x = 4,663.29

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1.5x scale

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.