Home / 2,830.39-4,247.24-1,186.80

Finding the Fourth Proportional to 2,830.39, 4,247.24 and 1,186.80

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Solution

The fourth proportional to 2,830.39, 4,247.24 and 1,186.80 is: 1,780.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.39 : 4,247.24 = 1,186.80 : x
  2. Step 2: Convert to fraction form
    2,830.39/4,247.24 = 1,186.80/x
  3. Step 3: Cross multiply
    2,830.39x = 4,247.24 × 1,186.80
  4. Step 4: Simplify right side
    2,830.39x = 5,040,602.57
  5. Step 5: Solve for x
    x = 5,040,602.57/2,830.39
  6. Step 6: Final answer
    x = 1,780.89

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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.