Home / 2,147.60-3,221.44-1,719.92

Finding the Fourth Proportional to 2,147.60, 3,221.44 and 1,719.92

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Solution

The fourth proportional to 2,147.60, 3,221.44 and 1,719.92 is: 2,579.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,147.60 : 3,221.44 = 1,719.92 : x
  2. Step 2: Convert to fraction form
    2,147.60/3,221.44 = 1,719.92/x
  3. Step 3: Cross multiply
    2,147.60x = 3,221.44 × 1,719.92
  4. Step 4: Simplify right side
    2,147.60x = 5,540,619.08
  5. Step 5: Solve for x
    x = 5,540,619.08/2,147.60
  6. Step 6: Final answer
    x = 2,579.91

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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.