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Finding the Fourth Proportional to 7,163.24, 10,750.62 and 7,128.68

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Solution

The fourth proportional to 7,163.24, 10,750.62 and 7,128.68 is: 10,698.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,163.24 : 10,750.62 = 7,128.68 : x
  2. Step 2: Convert to fraction form
    7,163.24/10,750.62 = 7,128.68/x
  3. Step 3: Cross multiply
    7,163.24x = 10,750.62 × 7,128.68
  4. Step 4: Simplify right side
    7,163.24x = 76,637,729.78
  5. Step 5: Solve for x
    x = 76,637,729.78/7,163.24
  6. Step 6: Final answer
    x = 10,698.75

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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.