Home / 5,390.82-8,086.53-1,928.07

Finding the Fourth Proportional to 5,390.82, 8,086.53 and 1,928.07

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Solution

The fourth proportional to 5,390.82, 8,086.53 and 1,928.07 is: 2,892.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.82 : 8,086.53 = 1,928.07 : x
  2. Step 2: Convert to fraction form
    5,390.82/8,086.53 = 1,928.07/x
  3. Step 3: Cross multiply
    5,390.82x = 8,086.53 × 1,928.07
  4. Step 4: Simplify right side
    5,390.82x = 15,591,395.90
  5. Step 5: Solve for x
    x = 15,591,395.90/5,390.82
  6. Step 6: Final answer
    x = 2,892.21

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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.