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Finding the Fourth Proportional to 3,998.45, 6,009.65 and 3,309.54

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Solution

The fourth proportional to 3,998.45, 6,009.65 and 3,309.54 is: 4,974.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.45 : 6,009.65 = 3,309.54 : x
  2. Step 2: Convert to fraction form
    3,998.45/6,009.65 = 3,309.54/x
  3. Step 3: Cross multiply
    3,998.45x = 6,009.65 × 3,309.54
  4. Step 4: Simplify right side
    3,998.45x = 19,889,160.51
  5. Step 5: Solve for x
    x = 19,889,160.51/3,998.45
  6. Step 6: Final answer
    x = 4,974.22

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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.