Home / 5,420.37-8,131.16-2,133.03

Finding the Fourth Proportional to 5,420.37, 8,131.16 and 2,133.03

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Solution

The fourth proportional to 5,420.37, 8,131.16 and 2,133.03 is: 3,199.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.37 : 8,131.16 = 2,133.03 : x
  2. Step 2: Convert to fraction form
    5,420.37/8,131.16 = 2,133.03/x
  3. Step 3: Cross multiply
    5,420.37x = 8,131.16 × 2,133.03
  4. Step 4: Simplify right side
    5,420.37x = 17,343,997.55
  5. Step 5: Solve for x
    x = 17,343,997.55/5,420.37
  6. Step 6: Final answer
    x = 3,199.78

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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.