Home / 7,719.69-11,576.46-2,786.64

Finding the Fourth Proportional to 7,719.69, 11,576.46 and 2,786.64

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Solution

The fourth proportional to 7,719.69, 11,576.46 and 2,786.64 is: 4,178.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.69 : 11,576.46 = 2,786.64 : x
  2. Step 2: Convert to fraction form
    7,719.69/11,576.46 = 2,786.64/x
  3. Step 3: Cross multiply
    7,719.69x = 11,576.46 × 2,786.64
  4. Step 4: Simplify right side
    7,719.69x = 32,259,426.49
  5. Step 5: Solve for x
    x = 32,259,426.49/7,719.69
  6. Step 6: Final answer
    x = 4,178.85

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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.