Home / 2,830.07-4,245.87-1,185.75

Finding the Fourth Proportional to 2,830.07, 4,245.87 and 1,185.75

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Solution

The fourth proportional to 2,830.07, 4,245.87 and 1,185.75 is: 1,778.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.07 : 4,245.87 = 1,185.75 : x
  2. Step 2: Convert to fraction form
    2,830.07/4,245.87 = 1,185.75/x
  3. Step 3: Cross multiply
    2,830.07x = 4,245.87 × 1,185.75
  4. Step 4: Simplify right side
    2,830.07x = 5,034,540.35
  5. Step 5: Solve for x
    x = 5,034,540.35/2,830.07
  6. Step 6: Final answer
    x = 1,778.95

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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.