Home / 6,420.75-8,861.36-3,626.43

Finding the Fourth Proportional to 6,420.75, 8,861.36 and 3,626.43

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Solution

The fourth proportional to 6,420.75, 8,861.36 and 3,626.43 is: 5,004.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.75 : 8,861.36 = 3,626.43 : x
  2. Step 2: Convert to fraction form
    6,420.75/8,861.36 = 3,626.43/x
  3. Step 3: Cross multiply
    6,420.75x = 8,861.36 × 3,626.43
  4. Step 4: Simplify right side
    6,420.75x = 32,135,083.61
  5. Step 5: Solve for x
    x = 32,135,083.61/6,420.75
  6. Step 6: Final answer
    x = 5,004.88

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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.