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Finding the Fourth Proportional to 7,221.06, 10,812.02 and 3,751.02

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Solution

The fourth proportional to 7,221.06, 10,812.02 and 3,751.02 is: 5,616.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.06 : 10,812.02 = 3,751.02 : x
  2. Step 2: Convert to fraction form
    7,221.06/10,812.02 = 3,751.02/x
  3. Step 3: Cross multiply
    7,221.06x = 10,812.02 × 3,751.02
  4. Step 4: Simplify right side
    7,221.06x = 40,556,112.64
  5. Step 5: Solve for x
    x = 40,556,112.64/7,221.06
  6. Step 6: Final answer
    x = 5,616.37

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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.