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Finding the Fourth Proportional to 6,486.84, 9,729.78 and 3,704.76

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Solution

The fourth proportional to 6,486.84, 9,729.78 and 3,704.76 is: 5,556.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,486.84 : 9,729.78 = 3,704.76 : x
  2. Step 2: Convert to fraction form
    6,486.84/9,729.78 = 3,704.76/x
  3. Step 3: Cross multiply
    6,486.84x = 9,729.78 × 3,704.76
  4. Step 4: Simplify right side
    6,486.84x = 36,046,499.75
  5. Step 5: Solve for x
    x = 36,046,499.75/6,486.84
  6. Step 6: Final answer
    x = 5,556.87

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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.