Home / 5,198.96-7,790.76-3,120.08

Finding the Fourth Proportional to 5,198.96, 7,790.76 and 3,120.08

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Solution

The fourth proportional to 5,198.96, 7,790.76 and 3,120.08 is: 4,675.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,198.96 : 7,790.76 = 3,120.08 : x
  2. Step 2: Convert to fraction form
    5,198.96/7,790.76 = 3,120.08/x
  3. Step 3: Cross multiply
    5,198.96x = 7,790.76 × 3,120.08
  4. Step 4: Simplify right side
    5,198.96x = 24,307,794.46
  5. Step 5: Solve for x
    x = 24,307,794.46/5,198.96
  6. Step 6: Final answer
    x = 4,675.51

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1.5x scale

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.