Home / 5,147.08-7,717.68-1,636.40

Finding the Fourth Proportional to 5,147.08, 7,717.68 and 1,636.40

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Solution

The fourth proportional to 5,147.08, 7,717.68 and 1,636.40 is: 2,453.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.08 : 7,717.68 = 1,636.40 : x
  2. Step 2: Convert to fraction form
    5,147.08/7,717.68 = 1,636.40/x
  3. Step 3: Cross multiply
    5,147.08x = 7,717.68 × 1,636.40
  4. Step 4: Simplify right side
    5,147.08x = 12,629,230.85
  5. Step 5: Solve for x
    x = 12,629,230.85/5,147.08
  6. Step 6: Final answer
    x = 2,453.67

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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.