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Finding the Fourth Proportional to 2,679.87, 3,696.38 and 1,884.88

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Solution

The fourth proportional to 2,679.87, 3,696.38 and 1,884.88 is: 2,599.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.87 : 3,696.38 = 1,884.88 : x
  2. Step 2: Convert to fraction form
    2,679.87/3,696.38 = 1,884.88/x
  3. Step 3: Cross multiply
    2,679.87x = 3,696.38 × 1,884.88
  4. Step 4: Simplify right side
    2,679.87x = 6,967,239.62
  5. Step 5: Solve for x
    x = 6,967,239.62/2,679.87
  6. Step 6: Final answer
    x = 2,599.84

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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.