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Finding the Fourth Proportional to 6,788.60, 10,182.90 and 1,857.87

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Solution

The fourth proportional to 6,788.60, 10,182.90 and 1,857.87 is: 2,786.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,788.60 : 10,182.90 = 1,857.87 : x
  2. Step 2: Convert to fraction form
    6,788.60/10,182.90 = 1,857.87/x
  3. Step 3: Cross multiply
    6,788.60x = 10,182.90 × 1,857.87
  4. Step 4: Simplify right side
    6,788.60x = 18,918,504.42
  5. Step 5: Solve for x
    x = 18,918,504.42/6,788.60
  6. Step 6: Final answer
    x = 2,786.81

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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.