Home / 2,215.25-3,324.92-1,120.38

Finding the Fourth Proportional to 2,215.25, 3,324.92 and 1,120.38

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Solution

The fourth proportional to 2,215.25, 3,324.92 and 1,120.38 is: 1,681.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.25 : 3,324.92 = 1,120.38 : x
  2. Step 2: Convert to fraction form
    2,215.25/3,324.92 = 1,120.38/x
  3. Step 3: Cross multiply
    2,215.25x = 3,324.92 × 1,120.38
  4. Step 4: Simplify right side
    2,215.25x = 3,725,173.87
  5. Step 5: Solve for x
    x = 3,725,173.87/2,215.25
  6. Step 6: Final answer
    x = 1,681.60

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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.