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Finding the Fourth Proportional to 2,174.56, 3,260.84 and 1,078.48

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Solution

The fourth proportional to 2,174.56, 3,260.84 and 1,078.48 is: 1,617.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.56 : 3,260.84 = 1,078.48 : x
  2. Step 2: Convert to fraction form
    2,174.56/3,260.84 = 1,078.48/x
  3. Step 3: Cross multiply
    2,174.56x = 3,260.84 × 1,078.48
  4. Step 4: Simplify right side
    2,174.56x = 3,516,750.72
  5. Step 5: Solve for x
    x = 3,516,750.72/2,174.56
  6. Step 6: Final answer
    x = 1,617.22

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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.