Home / 2,738.14-4,107.82-790.35

Finding the Fourth Proportional to 2,738.14, 4,107.82 and 790.35

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Solution

The fourth proportional to 2,738.14, 4,107.82 and 790.35 is: 1,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,738.14 : 4,107.82 = 790.35 : x
  2. Step 2: Convert to fraction form
    2,738.14/4,107.82 = 790.35/x
  3. Step 3: Cross multiply
    2,738.14x = 4,107.82 × 790.35
  4. Step 4: Simplify right side
    2,738.14x = 3,246,615.54
  5. Step 5: Solve for x
    x = 3,246,615.54/2,738.14
  6. Step 6: Final answer
    x = 1,185.70

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1.5x scale

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.