Home / 4,147.42-6,221.90-1,185.74

Finding the Fourth Proportional to 4,147.42, 6,221.90 and 1,185.74

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Solution

The fourth proportional to 4,147.42, 6,221.90 and 1,185.74 is: 1,778.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,147.42 : 6,221.90 = 1,185.74 : x
  2. Step 2: Convert to fraction form
    4,147.42/6,221.90 = 1,185.74/x
  3. Step 3: Cross multiply
    4,147.42x = 6,221.90 × 1,185.74
  4. Step 4: Simplify right side
    4,147.42x = 7,377,544.22
  5. Step 5: Solve for x
    x = 7,377,544.22/4,147.42
  6. Step 6: Final answer
    x = 1,778.83

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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.