Home / 1,891.18-2,608.92-1,228.24

Finding the Fourth Proportional to 1,891.18, 2,608.92 and 1,228.24

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Solution

The fourth proportional to 1,891.18, 2,608.92 and 1,228.24 is: 1,694.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.18 : 2,608.92 = 1,228.24 : x
  2. Step 2: Convert to fraction form
    1,891.18/2,608.92 = 1,228.24/x
  3. Step 3: Cross multiply
    1,891.18x = 2,608.92 × 1,228.24
  4. Step 4: Simplify right side
    1,891.18x = 3,204,379.90
  5. Step 5: Solve for x
    x = 3,204,379.90/1,891.18
  6. Step 6: Final answer
    x = 1,694.38

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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.