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Finding the Fourth Proportional to 6,876, 10,315.80 and 2,259

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Solution

The fourth proportional to 6,876, 10,315.80 and 2,259 is: 3,389.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,876 : 10,315.80 = 2,259 : x
  2. Step 2: Convert to fraction form
    6,876/10,315.80 = 2,259/x
  3. Step 3: Cross multiply
    6,876x = 10,315.80 × 2,259
  4. Step 4: Simplify right side
    6,876x = 23,303,392.20
  5. Step 5: Solve for x
    x = 23,303,392.20/6,876
  6. Step 6: Final answer
    x = 3,389.09

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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.