Home / 2,122.80-3,180.08-1,195.52

Finding the Fourth Proportional to 2,122.80, 3,180.08 and 1,195.52

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Solution

The fourth proportional to 2,122.80, 3,180.08 and 1,195.52 is: 1,790.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.80 : 3,180.08 = 1,195.52 : x
  2. Step 2: Convert to fraction form
    2,122.80/3,180.08 = 1,195.52/x
  3. Step 3: Cross multiply
    2,122.80x = 3,180.08 × 1,195.52
  4. Step 4: Simplify right side
    2,122.80x = 3,801,849.24
  5. Step 5: Solve for x
    x = 3,801,849.24/2,122.80
  6. Step 6: Final answer
    x = 1,790.96

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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.