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Finding the Fourth Proportional to 7,163.28, 10,671.05 and 6,945.64

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Solution

The fourth proportional to 7,163.28, 10,671.05 and 6,945.64 is: 10,346.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,163.28 : 10,671.05 = 6,945.64 : x
  2. Step 2: Convert to fraction form
    7,163.28/10,671.05 = 6,945.64/x
  3. Step 3: Cross multiply
    7,163.28x = 10,671.05 × 6,945.64
  4. Step 4: Simplify right side
    7,163.28x = 74,117,262.41
  5. Step 5: Solve for x
    x = 74,117,262.41/7,163.28
  6. Step 6: Final answer
    x = 10,346.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.