Home / 2,778.74-4,165.95-1,391.37

Finding the Fourth Proportional to 2,778.74, 4,165.95 and 1,391.37

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Solution

The fourth proportional to 2,778.74, 4,165.95 and 1,391.37 is: 2,085.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.74 : 4,165.95 = 1,391.37 : x
  2. Step 2: Convert to fraction form
    2,778.74/4,165.95 = 1,391.37/x
  3. Step 3: Cross multiply
    2,778.74x = 4,165.95 × 1,391.37
  4. Step 4: Simplify right side
    2,778.74x = 5,796,359.62
  5. Step 5: Solve for x
    x = 5,796,359.62/2,778.74
  6. Step 6: Final answer
    x = 2,085.96

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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.