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Finding the Fourth Proportional to 5,939.77, 8,910.75 and 1,990.64

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Solution

The fourth proportional to 5,939.77, 8,910.75 and 1,990.64 is: 2,986.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,939.77 : 8,910.75 = 1,990.64 : x
  2. Step 2: Convert to fraction form
    5,939.77/8,910.75 = 1,990.64/x
  3. Step 3: Cross multiply
    5,939.77x = 8,910.75 × 1,990.64
  4. Step 4: Simplify right side
    5,939.77x = 17,738,095.38
  5. Step 5: Solve for x
    x = 17,738,095.38/5,939.77
  6. Step 6: Final answer
    x = 2,986.33

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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.