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Finding the Fourth Proportional to 6,378.83, 8,803.80 and 3,861.26

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Solution

The fourth proportional to 6,378.83, 8,803.80 and 3,861.26 is: 5,329.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,378.83 : 8,803.80 = 3,861.26 : x
  2. Step 2: Convert to fraction form
    6,378.83/8,803.80 = 3,861.26/x
  3. Step 3: Cross multiply
    6,378.83x = 8,803.80 × 3,861.26
  4. Step 4: Simplify right side
    6,378.83x = 33,993,716.77
  5. Step 5: Solve for x
    x = 33,993,716.77/6,378.83
  6. Step 6: Final answer
    x = 5,329.15

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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.