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Finding the Fourth Proportional to 6,790.80, 10,182.60 and 2,890.80

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Solution

The fourth proportional to 6,790.80, 10,182.60 and 2,890.80 is: 4,334.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,790.80 : 10,182.60 = 2,890.80 : x
  2. Step 2: Convert to fraction form
    6,790.80/10,182.60 = 2,890.80/x
  3. Step 3: Cross multiply
    6,790.80x = 10,182.60 × 2,890.80
  4. Step 4: Simplify right side
    6,790.80x = 29,435,860.08
  5. Step 5: Solve for x
    x = 29,435,860.08/6,790.80
  6. Step 6: Final answer
    x = 4,334.67

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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.