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Finding the Fourth Proportional to 2,168.99, 2,993.21 and 1,174.28

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Solution

The fourth proportional to 2,168.99, 2,993.21 and 1,174.28 is: 1,620.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.99 : 2,993.21 = 1,174.28 : x
  2. Step 2: Convert to fraction form
    2,168.99/2,993.21 = 1,174.28/x
  3. Step 3: Cross multiply
    2,168.99x = 2,993.21 × 1,174.28
  4. Step 4: Simplify right side
    2,168.99x = 3,514,859.16
  5. Step 5: Solve for x
    x = 3,514,859.16/2,168.99
  6. Step 6: Final answer
    x = 1,620.50

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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.