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Finding the Fourth Proportional to 1,999.44, 3,000.40 and 1,025.92

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Solution

The fourth proportional to 1,999.44, 3,000.40 and 1,025.92 is: 1,539.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.44 : 3,000.40 = 1,025.92 : x
  2. Step 2: Convert to fraction form
    1,999.44/3,000.40 = 1,025.92/x
  3. Step 3: Cross multiply
    1,999.44x = 3,000.40 × 1,025.92
  4. Step 4: Simplify right side
    1,999.44x = 3,078,170.37
  5. Step 5: Solve for x
    x = 3,078,170.37/1,999.44
  6. Step 6: Final answer
    x = 1,539.52

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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.