Home / 2,215.27-3,057.03-1,220.55

Finding the Fourth Proportional to 2,215.27, 3,057.03 and 1,220.55

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Solution

The fourth proportional to 2,215.27, 3,057.03 and 1,220.55 is: 1,684.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.27 : 3,057.03 = 1,220.55 : x
  2. Step 2: Convert to fraction form
    2,215.27/3,057.03 = 1,220.55/x
  3. Step 3: Cross multiply
    2,215.27x = 3,057.03 × 1,220.55
  4. Step 4: Simplify right side
    2,215.27x = 3,731,257.97
  5. Step 5: Solve for x
    x = 3,731,257.97/2,215.27
  6. Step 6: Final answer
    x = 1,684.34

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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.