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Finding the Fourth Proportional to 2,107.99, 3,161.51 and 626.91

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Solution

The fourth proportional to 2,107.99, 3,161.51 and 626.91 is: 940.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.99 : 3,161.51 = 626.91 : x
  2. Step 2: Convert to fraction form
    2,107.99/3,161.51 = 626.91/x
  3. Step 3: Cross multiply
    2,107.99x = 3,161.51 × 626.91
  4. Step 4: Simplify right side
    2,107.99x = 1,981,982.23
  5. Step 5: Solve for x
    x = 1,981,982.23/2,107.99
  6. Step 6: Final answer
    x = 940.22

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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.