Home / 2,780.37-4,169.34-1,319.94

Finding the Fourth Proportional to 2,780.37, 4,169.34 and 1,319.94

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Solution

The fourth proportional to 2,780.37, 4,169.34 and 1,319.94 is: 1,979.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.37 : 4,169.34 = 1,319.94 : x
  2. Step 2: Convert to fraction form
    2,780.37/4,169.34 = 1,319.94/x
  3. Step 3: Cross multiply
    2,780.37x = 4,169.34 × 1,319.94
  4. Step 4: Simplify right side
    2,780.37x = 5,503,278.64
  5. Step 5: Solve for x
    x = 5,503,278.64/2,780.37
  6. Step 6: Final answer
    x = 1,979.33

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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.