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Finding the Fourth Proportional to 7,908.58, 11,867.10 and 5,134.60

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Solution

The fourth proportional to 7,908.58, 11,867.10 and 5,134.60 is: 7,704.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.58 : 11,867.10 = 5,134.60 : x
  2. Step 2: Convert to fraction form
    7,908.58/11,867.10 = 5,134.60/x
  3. Step 3: Cross multiply
    7,908.58x = 11,867.10 × 5,134.60
  4. Step 4: Simplify right side
    7,908.58x = 60,932,781.99
  5. Step 5: Solve for x
    x = 60,932,781.99/7,908.58
  6. Step 6: Final answer
    x = 7,704.64

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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.