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Finding the Fourth Proportional to 3,197.96, 4,412.12 and 1,939.40

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Solution

The fourth proportional to 3,197.96, 4,412.12 and 1,939.40 is: 2,675.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,197.96 : 4,412.12 = 1,939.40 : x
  2. Step 2: Convert to fraction form
    3,197.96/4,412.12 = 1,939.40/x
  3. Step 3: Cross multiply
    3,197.96x = 4,412.12 × 1,939.40
  4. Step 4: Simplify right side
    3,197.96x = 8,556,865.53
  5. Step 5: Solve for x
    x = 8,556,865.53/3,197.96
  6. Step 6: Final answer
    x = 2,675.73

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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.