Home / 2,738.12-4,107.33-790.28

Finding the Fourth Proportional to 2,738.12, 4,107.33 and 790.28

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Solution

The fourth proportional to 2,738.12, 4,107.33 and 790.28 is: 1,185.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,738.12 : 4,107.33 = 790.28 : x
  2. Step 2: Convert to fraction form
    2,738.12/4,107.33 = 790.28/x
  3. Step 3: Cross multiply
    2,738.12x = 4,107.33 × 790.28
  4. Step 4: Simplify right side
    2,738.12x = 3,245,920.22
  5. Step 5: Solve for x
    x = 3,245,920.22/2,738.12
  6. Step 6: Final answer
    x = 1,185.46

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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.