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Finding the Fourth Proportional to 2,168.25, 2,992.19 and 1,173.53

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Solution

The fourth proportional to 2,168.25, 2,992.19 and 1,173.53 is: 1,619.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.25 : 2,992.19 = 1,173.53 : x
  2. Step 2: Convert to fraction form
    2,168.25/2,992.19 = 1,173.53/x
  3. Step 3: Cross multiply
    2,168.25x = 2,992.19 × 1,173.53
  4. Step 4: Simplify right side
    2,168.25x = 3,511,424.73
  5. Step 5: Solve for x
    x = 3,511,424.73/2,168.25
  6. Step 6: Final answer
    x = 1,619.47

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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.