Home / 5,143.25-7,097.71-2,785.39

Finding the Fourth Proportional to 5,143.25, 7,097.71 and 2,785.39

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Solution

The fourth proportional to 5,143.25, 7,097.71 and 2,785.39 is: 3,843.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.25 : 7,097.71 = 2,785.39 : x
  2. Step 2: Convert to fraction form
    5,143.25/7,097.71 = 2,785.39/x
  3. Step 3: Cross multiply
    5,143.25x = 7,097.71 × 2,785.39
  4. Step 4: Simplify right side
    5,143.25x = 19,769,890.46
  5. Step 5: Solve for x
    x = 19,769,890.46/5,143.25
  6. Step 6: Final answer
    x = 3,843.85

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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.