Home / 8,289.82-12,438.15-3,358.20

Finding the Fourth Proportional to 8,289.82, 12,438.15 and 3,358.20

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Solution

The fourth proportional to 8,289.82, 12,438.15 and 3,358.20 is: 5,038.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,289.82 : 12,438.15 = 3,358.20 : x
  2. Step 2: Convert to fraction form
    8,289.82/12,438.15 = 3,358.20/x
  3. Step 3: Cross multiply
    8,289.82x = 12,438.15 × 3,358.20
  4. Step 4: Simplify right side
    8,289.82x = 41,769,795.33
  5. Step 5: Solve for x
    x = 41,769,795.33/8,289.82
  6. Step 6: Final answer
    x = 5,038.69

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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.