Home / 2,215.56-3,057.44-1,220.94

Finding the Fourth Proportional to 2,215.56, 3,057.44 and 1,220.94

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Solution

The fourth proportional to 2,215.56, 3,057.44 and 1,220.94 is: 1,684.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.56 : 3,057.44 = 1,220.94 : x
  2. Step 2: Convert to fraction form
    2,215.56/3,057.44 = 1,220.94/x
  3. Step 3: Cross multiply
    2,215.56x = 3,057.44 × 1,220.94
  4. Step 4: Simplify right side
    2,215.56x = 3,732,950.79
  5. Step 5: Solve for x
    x = 3,732,950.79/2,215.56
  6. Step 6: Final answer
    x = 1,684.88

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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.