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Finding the Fourth Proportional to 5,011.21, 6,918.22 and 3,751.81

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Solution

The fourth proportional to 5,011.21, 6,918.22 and 3,751.81 is: 5,179.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,011.21 : 6,918.22 = 3,751.81 : x
  2. Step 2: Convert to fraction form
    5,011.21/6,918.22 = 3,751.81/x
  3. Step 3: Cross multiply
    5,011.21x = 6,918.22 × 3,751.81
  4. Step 4: Simplify right side
    5,011.21x = 25,955,846.98
  5. Step 5: Solve for x
    x = 25,955,846.98/5,011.21
  6. Step 6: Final answer
    x = 5,179.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.