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Finding the Fourth Proportional to 1,874.97, 2,814.27 and 1,386.54

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Solution

The fourth proportional to 1,874.97, 2,814.27 and 1,386.54 is: 2,081.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.97 : 2,814.27 = 1,386.54 : x
  2. Step 2: Convert to fraction form
    1,874.97/2,814.27 = 1,386.54/x
  3. Step 3: Cross multiply
    1,874.97x = 2,814.27 × 1,386.54
  4. Step 4: Simplify right side
    1,874.97x = 3,902,097.93
  5. Step 5: Solve for x
    x = 3,902,097.93/1,874.97
  6. Step 6: Final answer
    x = 2,081.15

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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.