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Finding the Fourth Proportional to 5,458.56, 8,187.84 and 1,993.92

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Solution

The fourth proportional to 5,458.56, 8,187.84 and 1,993.92 is: 2,990.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,458.56 : 8,187.84 = 1,993.92 : x
  2. Step 2: Convert to fraction form
    5,458.56/8,187.84 = 1,993.92/x
  3. Step 3: Cross multiply
    5,458.56x = 8,187.84 × 1,993.92
  4. Step 4: Simplify right side
    5,458.56x = 16,325,897.93
  5. Step 5: Solve for x
    x = 16,325,897.93/5,458.56
  6. Step 6: Final answer
    x = 2,990.88

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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.