Home / 3,726.84-5,143.97-2,155.85

Finding the Fourth Proportional to 3,726.84, 5,143.97 and 2,155.85

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Solution

The fourth proportional to 3,726.84, 5,143.97 and 2,155.85 is: 2,975.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,726.84 : 5,143.97 = 2,155.85 : x
  2. Step 2: Convert to fraction form
    3,726.84/5,143.97 = 2,155.85/x
  3. Step 3: Cross multiply
    3,726.84x = 5,143.97 × 2,155.85
  4. Step 4: Simplify right side
    3,726.84x = 11,089,626.68
  5. Step 5: Solve for x
    x = 11,089,626.68/3,726.84
  6. Step 6: Final answer
    x = 2,975.61

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1.5x scale

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.