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Finding the Fourth Proportional to 7,778.80, 11,674.14 and 5,704.30

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Solution

The fourth proportional to 7,778.80, 11,674.14 and 5,704.30 is: 8,560.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.80 : 11,674.14 = 5,704.30 : x
  2. Step 2: Convert to fraction form
    7,778.80/11,674.14 = 5,704.30/x
  3. Step 3: Cross multiply
    7,778.80x = 11,674.14 × 5,704.30
  4. Step 4: Simplify right side
    7,778.80x = 66,592,796.80
  5. Step 5: Solve for x
    x = 66,592,796.80/7,778.80
  6. Step 6: Final answer
    x = 8,560.81

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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.