Home / 5,990.28-8,979.12-2,091.78

Finding the Fourth Proportional to 5,990.28, 8,979.12 and 2,091.78

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Solution

The fourth proportional to 5,990.28, 8,979.12 and 2,091.78 is: 3,135.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,990.28 : 8,979.12 = 2,091.78 : x
  2. Step 2: Convert to fraction form
    5,990.28/8,979.12 = 2,091.78/x
  3. Step 3: Cross multiply
    5,990.28x = 8,979.12 × 2,091.78
  4. Step 4: Simplify right side
    5,990.28x = 18,782,343.63
  5. Step 5: Solve for x
    x = 18,782,343.63/5,990.28
  6. Step 6: Final answer
    x = 3,135.47

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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.