Home / 2,112.21-3,170.55-1,726.65

Finding the Fourth Proportional to 2,112.21, 3,170.55 and 1,726.65

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Solution

The fourth proportional to 2,112.21, 3,170.55 and 1,726.65 is: 2,591.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.21 : 3,170.55 = 1,726.65 : x
  2. Step 2: Convert to fraction form
    2,112.21/3,170.55 = 1,726.65/x
  3. Step 3: Cross multiply
    2,112.21x = 3,170.55 × 1,726.65
  4. Step 4: Simplify right side
    2,112.21x = 5,474,430.16
  5. Step 5: Solve for x
    x = 5,474,430.16/2,112.21
  6. Step 6: Final answer
    x = 2,591.80

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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.