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Finding the Fourth Proportional to 8,609.39, 12,921.01 and 4,450.62

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Solution

The fourth proportional to 8,609.39, 12,921.01 and 4,450.62 is: 6,679.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.39 : 12,921.01 = 4,450.62 : x
  2. Step 2: Convert to fraction form
    8,609.39/12,921.01 = 4,450.62/x
  3. Step 3: Cross multiply
    8,609.39x = 12,921.01 × 4,450.62
  4. Step 4: Simplify right side
    8,609.39x = 57,506,505.53
  5. Step 5: Solve for x
    x = 57,506,505.53/8,609.39
  6. Step 6: Final answer
    x = 6,679.51

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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.