Home / 4,979.81-7,469.87-2,786.83

Finding the Fourth Proportional to 4,979.81, 7,469.87 and 2,786.83

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Solution

The fourth proportional to 4,979.81, 7,469.87 and 2,786.83 is: 4,180.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.81 : 7,469.87 = 2,786.83 : x
  2. Step 2: Convert to fraction form
    4,979.81/7,469.87 = 2,786.83/x
  3. Step 3: Cross multiply
    4,979.81x = 7,469.87 × 2,786.83
  4. Step 4: Simplify right side
    4,979.81x = 20,817,225.20
  5. Step 5: Solve for x
    x = 20,817,225.20/4,979.81
  6. Step 6: Final answer
    x = 4,180.32

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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.