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Finding the Fourth Proportional to 6,507.79, 9,766.85 and 3,388.68

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Solution

The fourth proportional to 6,507.79, 9,766.85 and 3,388.68 is: 5,085.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,507.79 : 9,766.85 = 3,388.68 : x
  2. Step 2: Convert to fraction form
    6,507.79/9,766.85 = 3,388.68/x
  3. Step 3: Cross multiply
    6,507.79x = 9,766.85 × 3,388.68
  4. Step 4: Simplify right side
    6,507.79x = 33,096,753.68
  5. Step 5: Solve for x
    x = 33,096,753.68/6,507.79
  6. Step 6: Final answer
    x = 5,085.71

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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.