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Finding the Fourth Proportional to 2,131.27, 3,197.04 and 670.48

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Solution

The fourth proportional to 2,131.27, 3,197.04 and 670.48 is: 1,005.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.27 : 3,197.04 = 670.48 : x
  2. Step 2: Convert to fraction form
    2,131.27/3,197.04 = 670.48/x
  3. Step 3: Cross multiply
    2,131.27x = 3,197.04 × 670.48
  4. Step 4: Simplify right side
    2,131.27x = 2,143,551.38
  5. Step 5: Solve for x
    x = 2,143,551.38/2,131.27
  6. Step 6: Final answer
    x = 1,005.76

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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.