Home / 5,189.16-7,783.72-3,109.79

Finding the Fourth Proportional to 5,189.16, 7,783.72 and 3,109.79

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Solution

The fourth proportional to 5,189.16, 7,783.72 and 3,109.79 is: 4,664.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,189.16 : 7,783.72 = 3,109.79 : x
  2. Step 2: Convert to fraction form
    5,189.16/7,783.72 = 3,109.79/x
  3. Step 3: Cross multiply
    5,189.16x = 7,783.72 × 3,109.79
  4. Step 4: Simplify right side
    5,189.16x = 24,205,734.62
  5. Step 5: Solve for x
    x = 24,205,734.62/5,189.16
  6. Step 6: Final answer
    x = 4,664.67

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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.