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Finding the Fourth Proportional to 2,054.56, 3,080.18 and 648.26

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Solution

The fourth proportional to 2,054.56, 3,080.18 and 648.26 is: 971.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,054.56 : 3,080.18 = 648.26 : x
  2. Step 2: Convert to fraction form
    2,054.56/3,080.18 = 648.26/x
  3. Step 3: Cross multiply
    2,054.56x = 3,080.18 × 648.26
  4. Step 4: Simplify right side
    2,054.56x = 1,996,757.49
  5. Step 5: Solve for x
    x = 1,996,757.49/2,054.56
  6. Step 6: Final answer
    x = 971.87

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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.