Home / 7,180.72-10,771.48-2,797.81

Finding the Fourth Proportional to 7,180.72, 10,771.48 and 2,797.81

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Solution

The fourth proportional to 7,180.72, 10,771.48 and 2,797.81 is: 4,196.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.72 : 10,771.48 = 2,797.81 : x
  2. Step 2: Convert to fraction form
    7,180.72/10,771.48 = 2,797.81/x
  3. Step 3: Cross multiply
    7,180.72x = 10,771.48 × 2,797.81
  4. Step 4: Simplify right side
    7,180.72x = 30,136,531.03
  5. Step 5: Solve for x
    x = 30,136,531.03/7,180.72
  6. Step 6: Final answer
    x = 4,196.87

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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.