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Finding the Fourth Proportional to 2,083.53, 3,126.66 and 851.07

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Solution

The fourth proportional to 2,083.53, 3,126.66 and 851.07 is: 1,277.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,083.53 : 3,126.66 = 851.07 : x
  2. Step 2: Convert to fraction form
    2,083.53/3,126.66 = 851.07/x
  3. Step 3: Cross multiply
    2,083.53x = 3,126.66 × 851.07
  4. Step 4: Simplify right side
    2,083.53x = 2,661,006.53
  5. Step 5: Solve for x
    x = 2,661,006.53/2,083.53
  6. Step 6: Final answer
    x = 1,277.16

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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.