Home / 2,215.56-3,057-1,331.76

Finding the Fourth Proportional to 2,215.56, 3,057 and 1,331.76

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Solution

The fourth proportional to 2,215.56, 3,057 and 1,331.76 is: 1,837.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.56 : 3,057 = 1,331.76 : x
  2. Step 2: Convert to fraction form
    2,215.56/3,057 = 1,331.76/x
  3. Step 3: Cross multiply
    2,215.56x = 3,057 × 1,331.76
  4. Step 4: Simplify right side
    2,215.56x = 4,071,190.32
  5. Step 5: Solve for x
    x = 4,071,190.32/2,215.56
  6. Step 6: Final answer
    x = 1,837.54

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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.