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Finding the Fourth Proportional to 4,886.75, 6,743.96 and 2,678.75

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Solution

The fourth proportional to 4,886.75, 6,743.96 and 2,678.75 is: 3,696.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,886.75 : 6,743.96 = 2,678.75 : x
  2. Step 2: Convert to fraction form
    4,886.75/6,743.96 = 2,678.75/x
  3. Step 3: Cross multiply
    4,886.75x = 6,743.96 × 2,678.75
  4. Step 4: Simplify right side
    4,886.75x = 18,065,382.85
  5. Step 5: Solve for x
    x = 18,065,382.85/4,886.75
  6. Step 6: Final answer
    x = 3,696.81

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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.