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Finding the Fourth Proportional to 6,402.05, 8,836.49 and 4,170.05

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Solution

The fourth proportional to 6,402.05, 8,836.49 and 4,170.05 is: 5,755.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,402.05 : 8,836.49 = 4,170.05 : x
  2. Step 2: Convert to fraction form
    6,402.05/8,836.49 = 4,170.05/x
  3. Step 3: Cross multiply
    6,402.05x = 8,836.49 × 4,170.05
  4. Step 4: Simplify right side
    6,402.05x = 36,848,571.37
  5. Step 5: Solve for x
    x = 36,848,571.37/6,402.05
  6. Step 6: Final answer
    x = 5,755.75

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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.