Home / 8,485.22-12,704.08-6,398.69

Finding the Fourth Proportional to 8,485.22, 12,704.08 and 6,398.69

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Solution

The fourth proportional to 8,485.22, 12,704.08 and 6,398.69 is: 9,580.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.22 : 12,704.08 = 6,398.69 : x
  2. Step 2: Convert to fraction form
    8,485.22/12,704.08 = 6,398.69/x
  3. Step 3: Cross multiply
    8,485.22x = 12,704.08 × 6,398.69
  4. Step 4: Simplify right side
    8,485.22x = 81,289,469.66
  5. Step 5: Solve for x
    x = 81,289,469.66/8,485.22
  6. Step 6: Final answer
    x = 9,580.13

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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.