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Finding the Fourth Proportional to 6,485.67, 8,949.65 and 3,797.21

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Solution

The fourth proportional to 6,485.67, 8,949.65 and 3,797.21 is: 5,239.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.67 : 8,949.65 = 3,797.21 : x
  2. Step 2: Convert to fraction form
    6,485.67/8,949.65 = 3,797.21/x
  3. Step 3: Cross multiply
    6,485.67x = 8,949.65 × 3,797.21
  4. Step 4: Simplify right side
    6,485.67x = 33,983,703.86
  5. Step 5: Solve for x
    x = 33,983,703.86/6,485.67
  6. Step 6: Final answer
    x = 5,239.81

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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.