Home / 2,131.79-3,198.62-746.12

Finding the Fourth Proportional to 2,131.79, 3,198.62 and 746.12

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Solution

The fourth proportional to 2,131.79, 3,198.62 and 746.12 is: 1,119.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.79 : 3,198.62 = 746.12 : x
  2. Step 2: Convert to fraction form
    2,131.79/3,198.62 = 746.12/x
  3. Step 3: Cross multiply
    2,131.79x = 3,198.62 × 746.12
  4. Step 4: Simplify right side
    2,131.79x = 2,386,554.35
  5. Step 5: Solve for x
    x = 2,386,554.35/2,131.79
  6. Step 6: Final answer
    x = 1,119.51

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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.