Home / 2,830.38-4,247.25-1,186.80

Finding the Fourth Proportional to 2,830.38, 4,247.25 and 1,186.80

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Solution

The fourth proportional to 2,830.38, 4,247.25 and 1,186.80 is: 1,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.38 : 4,247.25 = 1,186.80 : x
  2. Step 2: Convert to fraction form
    2,830.38/4,247.25 = 1,186.80/x
  3. Step 3: Cross multiply
    2,830.38x = 4,247.25 × 1,186.80
  4. Step 4: Simplify right side
    2,830.38x = 5,040,636.30
  5. Step 5: Solve for x
    x = 5,040,636.30/2,830.38
  6. Step 6: Final answer
    x = 1,780.90

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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.