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Finding the Fourth Proportional to 3,998.95, 5,989.71 and 3,297.76

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Solution

The fourth proportional to 3,998.95, 5,989.71 and 3,297.76 is: 4,939.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.95 : 5,989.71 = 3,297.76 : x
  2. Step 2: Convert to fraction form
    3,998.95/5,989.71 = 3,297.76/x
  3. Step 3: Cross multiply
    3,998.95x = 5,989.71 × 3,297.76
  4. Step 4: Simplify right side
    3,998.95x = 19,752,626.05
  5. Step 5: Solve for x
    x = 19,752,626.05/3,998.95
  6. Step 6: Final answer
    x = 4,939.45

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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.