Home / 2,789.40-4,184.79-1,969.26

Finding the Fourth Proportional to 2,789.40, 4,184.79 and 1,969.26

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Solution

The fourth proportional to 2,789.40, 4,184.79 and 1,969.26 is: 2,954.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.40 : 4,184.79 = 1,969.26 : x
  2. Step 2: Convert to fraction form
    2,789.40/4,184.79 = 1,969.26/x
  3. Step 3: Cross multiply
    2,789.40x = 4,184.79 × 1,969.26
  4. Step 4: Simplify right side
    2,789.40x = 8,240,939.56
  5. Step 5: Solve for x
    x = 8,240,939.56/2,789.40
  6. Step 6: Final answer
    x = 2,954.38

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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.