Home / 6,418.75-9,623.96-4,220.81

Finding the Fourth Proportional to 6,418.75, 9,623.96 and 4,220.81

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Solution

The fourth proportional to 6,418.75, 9,623.96 and 4,220.81 is: 6,328.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,418.75 : 9,623.96 = 4,220.81 : x
  2. Step 2: Convert to fraction form
    6,418.75/9,623.96 = 4,220.81/x
  3. Step 3: Cross multiply
    6,418.75x = 9,623.96 × 4,220.81
  4. Step 4: Simplify right side
    6,418.75x = 40,620,906.61
  5. Step 5: Solve for x
    x = 40,620,906.61/6,418.75
  6. Step 6: Final answer
    x = 6,328.48

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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.