Home / 2,179.44-3,271.32-1,399.68

Finding the Fourth Proportional to 2,179.44, 3,271.32 and 1,399.68

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Solution

The fourth proportional to 2,179.44, 3,271.32 and 1,399.68 is: 2,100.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.44 : 3,271.32 = 1,399.68 : x
  2. Step 2: Convert to fraction form
    2,179.44/3,271.32 = 1,399.68/x
  3. Step 3: Cross multiply
    2,179.44x = 3,271.32 × 1,399.68
  4. Step 4: Simplify right side
    2,179.44x = 4,578,801.18
  5. Step 5: Solve for x
    x = 4,578,801.18/2,179.44
  6. Step 6: Final answer
    x = 2,100.91

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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.