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Finding the Fourth Proportional to 3,999.80, 6,000.64 and 1,226.88

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Solution

The fourth proportional to 3,999.80, 6,000.64 and 1,226.88 is: 1,840.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.80 : 6,000.64 = 1,226.88 : x
  2. Step 2: Convert to fraction form
    3,999.80/6,000.64 = 1,226.88/x
  3. Step 3: Cross multiply
    3,999.80x = 6,000.64 × 1,226.88
  4. Step 4: Simplify right side
    3,999.80x = 7,362,062.14
  5. Step 5: Solve for x
    x = 7,362,062.14/3,999.80
  6. Step 6: Final answer
    x = 1,840.61

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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.