Home / 7,142.08-9,856.26-3,997.96

Finding the Fourth Proportional to 7,142.08, 9,856.26 and 3,997.96

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Solution

The fourth proportional to 7,142.08, 9,856.26 and 3,997.96 is: 5,517.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.08 : 9,856.26 = 3,997.96 : x
  2. Step 2: Convert to fraction form
    7,142.08/9,856.26 = 3,997.96/x
  3. Step 3: Cross multiply
    7,142.08x = 9,856.26 × 3,997.96
  4. Step 4: Simplify right side
    7,142.08x = 39,404,933.23
  5. Step 5: Solve for x
    x = 39,404,933.23/7,142.08
  6. Step 6: Final answer
    x = 5,517.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.