Home / 3,426.98-5,139.80-2,190.65

Finding the Fourth Proportional to 3,426.98, 5,139.80 and 2,190.65

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Solution

The fourth proportional to 3,426.98, 5,139.80 and 2,190.65 is: 3,285.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.98 : 5,139.80 = 2,190.65 : x
  2. Step 2: Convert to fraction form
    3,426.98/5,139.80 = 2,190.65/x
  3. Step 3: Cross multiply
    3,426.98x = 5,139.80 × 2,190.65
  4. Step 4: Simplify right side
    3,426.98x = 11,259,491.92
  5. Step 5: Solve for x
    x = 11,259,491.92/3,426.98
  6. Step 6: Final answer
    x = 3,285.54

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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.