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Finding the Fourth Proportional to 6,423.96, 8,865.21 and 3,773.28

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Solution

The fourth proportional to 6,423.96, 8,865.21 and 3,773.28 is: 5,207.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,423.96 : 8,865.21 = 3,773.28 : x
  2. Step 2: Convert to fraction form
    6,423.96/8,865.21 = 3,773.28/x
  3. Step 3: Cross multiply
    6,423.96x = 8,865.21 × 3,773.28
  4. Step 4: Simplify right side
    6,423.96x = 33,450,919.59
  5. Step 5: Solve for x
    x = 33,450,919.59/6,423.96
  6. Step 6: Final answer
    x = 5,207.21

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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.