Home / 7,147.58-10,715.22-2,768.09

Finding the Fourth Proportional to 7,147.58, 10,715.22 and 2,768.09

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Solution

The fourth proportional to 7,147.58, 10,715.22 and 2,768.09 is: 4,149.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.58 : 10,715.22 = 2,768.09 : x
  2. Step 2: Convert to fraction form
    7,147.58/10,715.22 = 2,768.09/x
  3. Step 3: Cross multiply
    7,147.58x = 10,715.22 × 2,768.09
  4. Step 4: Simplify right side
    7,147.58x = 29,660,639.75
  5. Step 5: Solve for x
    x = 29,660,639.75/7,147.58
  6. Step 6: Final answer
    x = 4,149.75

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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.