Home / 8,486.22-12,705.53-6,399.66

Finding the Fourth Proportional to 8,486.22, 12,705.53 and 6,399.66

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Solution

The fourth proportional to 8,486.22, 12,705.53 and 6,399.66 is: 9,581.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,486.22 : 12,705.53 = 6,399.66 : x
  2. Step 2: Convert to fraction form
    8,486.22/12,705.53 = 6,399.66/x
  3. Step 3: Cross multiply
    8,486.22x = 12,705.53 × 6,399.66
  4. Step 4: Simplify right side
    8,486.22x = 81,311,040.12
  5. Step 5: Solve for x
    x = 81,311,040.12/8,486.22
  6. Step 6: Final answer
    x = 9,581.54

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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.