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Finding the Fourth Proportional to 5,243.08, 7,857.04 and 3,945.48

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Solution

The fourth proportional to 5,243.08, 7,857.04 and 3,945.48 is: 5,912.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243.08 : 7,857.04 = 3,945.48 : x
  2. Step 2: Convert to fraction form
    5,243.08/7,857.04 = 3,945.48/x
  3. Step 3: Cross multiply
    5,243.08x = 7,857.04 × 3,945.48
  4. Step 4: Simplify right side
    5,243.08x = 30,999,794.18
  5. Step 5: Solve for x
    x = 30,999,794.18/5,243.08
  6. Step 6: Final answer
    x = 5,912.52

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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.