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Finding the Fourth Proportional to 8,608.17, 12,919.18 and 4,449.40

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Solution

The fourth proportional to 8,608.17, 12,919.18 and 4,449.40 is: 6,677.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.17 : 12,919.18 = 4,449.40 : x
  2. Step 2: Convert to fraction form
    8,608.17/12,919.18 = 4,449.40/x
  3. Step 3: Cross multiply
    8,608.17x = 12,919.18 × 4,449.40
  4. Step 4: Simplify right side
    8,608.17x = 57,482,564.15
  5. Step 5: Solve for x
    x = 57,482,564.15/8,608.17
  6. Step 6: Final answer
    x = 6,677.67

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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.