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Finding the Fourth Proportional to 2,055.63, 3,083.64 and 668.61

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Solution

The fourth proportional to 2,055.63, 3,083.64 and 668.61 is: 1,002.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,055.63 : 3,083.64 = 668.61 : x
  2. Step 2: Convert to fraction form
    2,055.63/3,083.64 = 668.61/x
  3. Step 3: Cross multiply
    2,055.63x = 3,083.64 × 668.61
  4. Step 4: Simplify right side
    2,055.63x = 2,061,750.03
  5. Step 5: Solve for x
    x = 2,061,750.03/2,055.63
  6. Step 6: Final answer
    x = 1,002.98

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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.