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Finding the Fourth Proportional to 11,797.16, 16,279.78 and 6,419.37

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Solution

The fourth proportional to 11,797.16, 16,279.78 and 6,419.37 is: 8,858.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,797.16 : 16,279.78 = 6,419.37 : x
  2. Step 2: Convert to fraction form
    11,797.16/16,279.78 = 6,419.37/x
  3. Step 3: Cross multiply
    11,797.16x = 16,279.78 × 6,419.37
  4. Step 4: Simplify right side
    11,797.16x = 104,505,931.34
  5. Step 5: Solve for x
    x = 104,505,931.34/11,797.16
  6. Step 6: Final answer
    x = 8,858.57

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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.