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Finding the Fourth Proportional to 2,999.81, 4,139.26 and 1,804.51

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Solution

The fourth proportional to 2,999.81, 4,139.26 and 1,804.51 is: 2,489.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.81 : 4,139.26 = 1,804.51 : x
  2. Step 2: Convert to fraction form
    2,999.81/4,139.26 = 1,804.51/x
  3. Step 3: Cross multiply
    2,999.81x = 4,139.26 × 1,804.51
  4. Step 4: Simplify right side
    2,999.81x = 7,469,336.06
  5. Step 5: Solve for x
    x = 7,469,336.06/2,999.81
  6. Step 6: Final answer
    x = 2,489.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.