Home / 2,147.38-3,221.68-1,108.14

Finding the Fourth Proportional to 2,147.38, 3,221.68 and 1,108.14

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Solution

The fourth proportional to 2,147.38, 3,221.68 and 1,108.14 is: 1,662.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,147.38 : 3,221.68 = 1,108.14 : x
  2. Step 2: Convert to fraction form
    2,147.38/3,221.68 = 1,108.14/x
  3. Step 3: Cross multiply
    2,147.38x = 3,221.68 × 1,108.14
  4. Step 4: Simplify right side
    2,147.38x = 3,570,072.48
  5. Step 5: Solve for x
    x = 3,570,072.48/2,147.38
  6. Step 6: Final answer
    x = 1,662.52

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1.5x scale

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.