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Finding the Fourth Proportional to 7,998.64, 11,999.96 and 2,804.36

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Solution

The fourth proportional to 7,998.64, 11,999.96 and 2,804.36 is: 4,207.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.64 : 11,999.96 = 2,804.36 : x
  2. Step 2: Convert to fraction form
    7,998.64/11,999.96 = 2,804.36/x
  3. Step 3: Cross multiply
    7,998.64x = 11,999.96 × 2,804.36
  4. Step 4: Simplify right side
    7,998.64x = 33,652,207.83
  5. Step 5: Solve for x
    x = 33,652,207.83/7,998.64
  6. Step 6: Final answer
    x = 4,207.24

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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.