Home / 3,120.22-4,305.75-1,775.72

Finding the Fourth Proportional to 3,120.22, 4,305.75 and 1,775.72

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Solution

The fourth proportional to 3,120.22, 4,305.75 and 1,775.72 is: 2,450.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.22 : 4,305.75 = 1,775.72 : x
  2. Step 2: Convert to fraction form
    3,120.22/4,305.75 = 1,775.72/x
  3. Step 3: Cross multiply
    3,120.22x = 4,305.75 × 1,775.72
  4. Step 4: Simplify right side
    3,120.22x = 7,645,806.39
  5. Step 5: Solve for x
    x = 7,645,806.39/3,120.22
  6. Step 6: Final answer
    x = 2,450.41

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1.5x scale

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.