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Finding the Fourth Proportional to 3,999.92, 5,998.02 and 1,225.88

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Solution

The fourth proportional to 3,999.92, 5,998.02 and 1,225.88 is: 1,838.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.92 : 5,998.02 = 1,225.88 : x
  2. Step 2: Convert to fraction form
    3,999.92/5,998.02 = 1,225.88/x
  3. Step 3: Cross multiply
    3,999.92x = 5,998.02 × 1,225.88
  4. Step 4: Simplify right side
    3,999.92x = 7,352,852.76
  5. Step 5: Solve for x
    x = 7,352,852.76/3,999.92
  6. Step 6: Final answer
    x = 1,838.25

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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.