Home / 7,791.36-11,688-3,173.76

Finding the Fourth Proportional to 7,791.36, 11,688 and 3,173.76

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Solution

The fourth proportional to 7,791.36, 11,688 and 3,173.76 is: 4,761.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.36 : 11,688 = 3,173.76 : x
  2. Step 2: Convert to fraction form
    7,791.36/11,688 = 3,173.76/x
  3. Step 3: Cross multiply
    7,791.36x = 11,688 × 3,173.76
  4. Step 4: Simplify right side
    7,791.36x = 37,094,906.88
  5. Step 5: Solve for x
    x = 37,094,906.88/7,791.36
  6. Step 6: Final answer
    x = 4,761.03

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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.