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Finding the Fourth Proportional to 6,608.31, 9,120.63 and 5,020.22

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Solution

The fourth proportional to 6,608.31, 9,120.63 and 5,020.22 is: 6,928.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,608.31 : 9,120.63 = 5,020.22 : x
  2. Step 2: Convert to fraction form
    6,608.31/9,120.63 = 5,020.22/x
  3. Step 3: Cross multiply
    6,608.31x = 9,120.63 × 5,020.22
  4. Step 4: Simplify right side
    6,608.31x = 45,787,523.54
  5. Step 5: Solve for x
    x = 45,787,523.54/6,608.31
  6. Step 6: Final answer
    x = 6,928.78

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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.