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Finding the Fourth Proportional to 6,279.09, 9,419.55 and 1,896.90

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Solution

The fourth proportional to 6,279.09, 9,419.55 and 1,896.90 is: 2,845.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.09 : 9,419.55 = 1,896.90 : x
  2. Step 2: Convert to fraction form
    6,279.09/9,419.55 = 1,896.90/x
  3. Step 3: Cross multiply
    6,279.09x = 9,419.55 × 1,896.90
  4. Step 4: Simplify right side
    6,279.09x = 17,867,944.40
  5. Step 5: Solve for x
    x = 17,867,944.40/6,279.09
  6. Step 6: Final answer
    x = 2,845.63

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1.5x scale

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.