Home / 4,120.39-6,181.53-1,198.72

Finding the Fourth Proportional to 4,120.39, 6,181.53 and 1,198.72

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Solution

The fourth proportional to 4,120.39, 6,181.53 and 1,198.72 is: 1,798.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.39 : 6,181.53 = 1,198.72 : x
  2. Step 2: Convert to fraction form
    4,120.39/6,181.53 = 1,198.72/x
  3. Step 3: Cross multiply
    4,120.39x = 6,181.53 × 1,198.72
  4. Step 4: Simplify right side
    4,120.39x = 7,409,923.64
  5. Step 5: Solve for x
    x = 7,409,923.64/4,120.39
  6. Step 6: Final answer
    x = 1,798.35

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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.