Home / 5,143.26-7,097.70-2,785.38

Finding the Fourth Proportional to 5,143.26, 7,097.70 and 2,785.38

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Solution

The fourth proportional to 5,143.26, 7,097.70 and 2,785.38 is: 3,843.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.26 : 7,097.70 = 2,785.38 : x
  2. Step 2: Convert to fraction form
    5,143.26/7,097.70 = 2,785.38/x
  3. Step 3: Cross multiply
    5,143.26x = 7,097.70 × 2,785.38
  4. Step 4: Simplify right side
    5,143.26x = 19,769,791.63
  5. Step 5: Solve for x
    x = 19,769,791.63/5,143.26
  6. Step 6: Final answer
    x = 3,843.83

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.