Home / 2,148.22-3,220.70-1,107.77

Finding the Fourth Proportional to 2,148.22, 3,220.70 and 1,107.77

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Solution

The fourth proportional to 2,148.22, 3,220.70 and 1,107.77 is: 1,660.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.22 : 3,220.70 = 1,107.77 : x
  2. Step 2: Convert to fraction form
    2,148.22/3,220.70 = 1,107.77/x
  3. Step 3: Cross multiply
    2,148.22x = 3,220.70 × 1,107.77
  4. Step 4: Simplify right side
    2,148.22x = 3,567,794.84
  5. Step 5: Solve for x
    x = 3,567,794.84/2,148.22
  6. Step 6: Final answer
    x = 1,660.82

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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.