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Finding the Fourth Proportional to 5,388.70, 8,075.23 and 3,721.11

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Solution

The fourth proportional to 5,388.70, 8,075.23 and 3,721.11 is: 5,576.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.70 : 8,075.23 = 3,721.11 : x
  2. Step 2: Convert to fraction form
    5,388.70/8,075.23 = 3,721.11/x
  3. Step 3: Cross multiply
    5,388.70x = 8,075.23 × 3,721.11
  4. Step 4: Simplify right side
    5,388.70x = 30,048,819.11
  5. Step 5: Solve for x
    x = 30,048,819.11/5,388.70
  6. Step 6: Final answer
    x = 5,576.26

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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.