Home / 5,406.37-8,106.30-2,115.54

Finding the Fourth Proportional to 5,406.37, 8,106.30 and 2,115.54

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Solution

The fourth proportional to 5,406.37, 8,106.30 and 2,115.54 is: 3,172.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,406.37 : 8,106.30 = 2,115.54 : x
  2. Step 2: Convert to fraction form
    5,406.37/8,106.30 = 2,115.54/x
  3. Step 3: Cross multiply
    5,406.37x = 8,106.30 × 2,115.54
  4. Step 4: Simplify right side
    5,406.37x = 17,149,161.37
  5. Step 5: Solve for x
    x = 17,149,161.37/5,406.37
  6. Step 6: Final answer
    x = 3,172.03

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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.