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Finding the Fourth Proportional to 6,385.99, 8,808.29 and 3,863.75

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Solution

The fourth proportional to 6,385.99, 8,808.29 and 3,863.75 is: 5,329.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.99 : 8,808.29 = 3,863.75 : x
  2. Step 2: Convert to fraction form
    6,385.99/8,808.29 = 3,863.75/x
  3. Step 3: Cross multiply
    6,385.99x = 8,808.29 × 3,863.75
  4. Step 4: Simplify right side
    6,385.99x = 34,033,052.90
  5. Step 5: Solve for x
    x = 34,033,052.90/6,385.99
  6. Step 6: Final answer
    x = 5,329.33

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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.