Home / 8,485.55-12,716.68-6,403.85

Finding the Fourth Proportional to 8,485.55, 12,716.68 and 6,403.85

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Solution

The fourth proportional to 8,485.55, 12,716.68 and 6,403.85 is: 9,596.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.55 : 12,716.68 = 6,403.85 : x
  2. Step 2: Convert to fraction form
    8,485.55/12,716.68 = 6,403.85/x
  3. Step 3: Cross multiply
    8,485.55x = 12,716.68 × 6,403.85
  4. Step 4: Simplify right side
    8,485.55x = 81,435,711.22
  5. Step 5: Solve for x
    x = 81,435,711.22/8,485.55
  6. Step 6: Final answer
    x = 9,596.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.