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Finding the Fourth Proportional to 2,168.95, 2,993.13 and 1,174.21

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Solution

The fourth proportional to 2,168.95, 2,993.13 and 1,174.21 is: 1,620.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.95 : 2,993.13 = 1,174.21 : x
  2. Step 2: Convert to fraction form
    2,168.95/2,993.13 = 1,174.21/x
  3. Step 3: Cross multiply
    2,168.95x = 2,993.13 × 1,174.21
  4. Step 4: Simplify right side
    2,168.95x = 3,514,563.18
  5. Step 5: Solve for x
    x = 3,514,563.18/2,168.95
  6. Step 6: Final answer
    x = 1,620.40

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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.