Home / 2,081.80-3,117.66-1,107.28

Finding the Fourth Proportional to 2,081.80, 3,117.66 and 1,107.28

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Solution

The fourth proportional to 2,081.80, 3,117.66 and 1,107.28 is: 1,658.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.80 : 3,117.66 = 1,107.28 : x
  2. Step 2: Convert to fraction form
    2,081.80/3,117.66 = 1,107.28/x
  3. Step 3: Cross multiply
    2,081.80x = 3,117.66 × 1,107.28
  4. Step 4: Simplify right side
    2,081.80x = 3,452,122.56
  5. Step 5: Solve for x
    x = 3,452,122.56/2,081.80
  6. Step 6: Final answer
    x = 1,658.24

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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.