Home / 2,121.93-3,176.44-1,339.27

Finding the Fourth Proportional to 2,121.93, 3,176.44 and 1,339.27

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Solution

The fourth proportional to 2,121.93, 3,176.44 and 1,339.27 is: 2,004.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.93 : 3,176.44 = 1,339.27 : x
  2. Step 2: Convert to fraction form
    2,121.93/3,176.44 = 1,339.27/x
  3. Step 3: Cross multiply
    2,121.93x = 3,176.44 × 1,339.27
  4. Step 4: Simplify right side
    2,121.93x = 4,254,099.51
  5. Step 5: Solve for x
    x = 4,254,099.51/2,121.93
  6. Step 6: Final answer
    x = 2,004.83

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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.