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Finding the Fourth Proportional to 8,494.72, 12,751.68 and 6,784

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Solution

The fourth proportional to 8,494.72, 12,751.68 and 6,784 is: 10,183.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,494.72 : 12,751.68 = 6,784 : x
  2. Step 2: Convert to fraction form
    8,494.72/12,751.68 = 6,784/x
  3. Step 3: Cross multiply
    8,494.72x = 12,751.68 × 6,784
  4. Step 4: Simplify right side
    8,494.72x = 86,507,397.12
  5. Step 5: Solve for x
    x = 86,507,397.12/8,494.72
  6. Step 6: Final answer
    x = 10,183.67

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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.