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Finding the Fourth Proportional to 3,999.70, 5,990.84 and 3,298.50

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Solution

The fourth proportional to 3,999.70, 5,990.84 and 3,298.50 is: 4,940.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.70 : 5,990.84 = 3,298.50 : x
  2. Step 2: Convert to fraction form
    3,999.70/5,990.84 = 3,298.50/x
  3. Step 3: Cross multiply
    3,999.70x = 5,990.84 × 3,298.50
  4. Step 4: Simplify right side
    3,999.70x = 19,760,785.74
  5. Step 5: Solve for x
    x = 19,760,785.74/3,999.70
  6. Step 6: Final answer
    x = 4,940.57

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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.