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Finding the Fourth Proportional to 6,423.96, 9,635.78 and 2,961.21

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Solution

The fourth proportional to 6,423.96, 9,635.78 and 2,961.21 is: 4,441.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,423.96 : 9,635.78 = 2,961.21 : x
  2. Step 2: Convert to fraction form
    6,423.96/9,635.78 = 2,961.21/x
  3. Step 3: Cross multiply
    6,423.96x = 9,635.78 × 2,961.21
  4. Step 4: Simplify right side
    6,423.96x = 28,533,527.32
  5. Step 5: Solve for x
    x = 28,533,527.32/6,423.96
  6. Step 6: Final answer
    x = 4,441.74

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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.