Home / 3,186.42-4,779.90-1,105.80

Finding the Fourth Proportional to 3,186.42, 4,779.90 and 1,105.80

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Solution

The fourth proportional to 3,186.42, 4,779.90 and 1,105.80 is: 1,658.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.42 : 4,779.90 = 1,105.80 : x
  2. Step 2: Convert to fraction form
    3,186.42/4,779.90 = 1,105.80/x
  3. Step 3: Cross multiply
    3,186.42x = 4,779.90 × 1,105.80
  4. Step 4: Simplify right side
    3,186.42x = 5,285,613.42
  5. Step 5: Solve for x
    x = 5,285,613.42/3,186.42
  6. Step 6: Final answer
    x = 1,658.79

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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.