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Finding the Fourth Proportional to 7,144.40, 10,716.60 and 4,811.60

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Solution

The fourth proportional to 7,144.40, 10,716.60 and 4,811.60 is: 7,217.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.40 : 10,716.60 = 4,811.60 : x
  2. Step 2: Convert to fraction form
    7,144.40/10,716.60 = 4,811.60/x
  3. Step 3: Cross multiply
    7,144.40x = 10,716.60 × 4,811.60
  4. Step 4: Simplify right side
    7,144.40x = 51,563,992.56
  5. Step 5: Solve for x
    x = 51,563,992.56/7,144.40
  6. Step 6: Final answer
    x = 7,217.40

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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.