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Finding the Fourth Proportional to 2,163.93, 3,245.76 and 847.32

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Solution

The fourth proportional to 2,163.93, 3,245.76 and 847.32 is: 1,270.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.93 : 3,245.76 = 847.32 : x
  2. Step 2: Convert to fraction form
    2,163.93/3,245.76 = 847.32/x
  3. Step 3: Cross multiply
    2,163.93x = 3,245.76 × 847.32
  4. Step 4: Simplify right side
    2,163.93x = 2,750,197.36
  5. Step 5: Solve for x
    x = 2,750,197.36/2,163.93
  6. Step 6: Final answer
    x = 1,270.93

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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.