Home / 2,748.74-3,790.40-2,119.37

Finding the Fourth Proportional to 2,748.74, 3,790.40 and 2,119.37

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Solution

The fourth proportional to 2,748.74, 3,790.40 and 2,119.37 is: 2,922.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.74 : 3,790.40 = 2,119.37 : x
  2. Step 2: Convert to fraction form
    2,748.74/3,790.40 = 2,119.37/x
  3. Step 3: Cross multiply
    2,748.74x = 3,790.40 × 2,119.37
  4. Step 4: Simplify right side
    2,748.74x = 8,033,230.50
  5. Step 5: Solve for x
    x = 8,033,230.50/2,748.74
  6. Step 6: Final answer
    x = 2,922.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.