Home / 6,390.36-8,819.82-3,739.14

Finding the Fourth Proportional to 6,390.36, 8,819.82 and 3,739.14

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Solution

The fourth proportional to 6,390.36, 8,819.82 and 3,739.14 is: 5,160.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.36 : 8,819.82 = 3,739.14 : x
  2. Step 2: Convert to fraction form
    6,390.36/8,819.82 = 3,739.14/x
  3. Step 3: Cross multiply
    6,390.36x = 8,819.82 × 3,739.14
  4. Step 4: Simplify right side
    6,390.36x = 32,978,541.75
  5. Step 5: Solve for x
    x = 32,978,541.75/6,390.36
  6. Step 6: Final answer
    x = 5,160.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.