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Finding the Fourth Proportional to 6,441.68, 8,889.89 and 3,609.29

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Solution

The fourth proportional to 6,441.68, 8,889.89 and 3,609.29 is: 4,981.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,441.68 : 8,889.89 = 3,609.29 : x
  2. Step 2: Convert to fraction form
    6,441.68/8,889.89 = 3,609.29/x
  3. Step 3: Cross multiply
    6,441.68x = 8,889.89 × 3,609.29
  4. Step 4: Simplify right side
    6,441.68x = 32,086,191.08
  5. Step 5: Solve for x
    x = 32,086,191.08/6,441.68
  6. Step 6: Final answer
    x = 4,981.03

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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.