Home / 5,165.43-7,128.62-2,896.98

Finding the Fourth Proportional to 5,165.43, 7,128.62 and 2,896.98

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Solution

The fourth proportional to 5,165.43, 7,128.62 and 2,896.98 is: 3,998.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165.43 : 7,128.62 = 2,896.98 : x
  2. Step 2: Convert to fraction form
    5,165.43/7,128.62 = 2,896.98/x
  3. Step 3: Cross multiply
    5,165.43x = 7,128.62 × 2,896.98
  4. Step 4: Simplify right side
    5,165.43x = 20,651,469.57
  5. Step 5: Solve for x
    x = 20,651,469.57/5,165.43
  6. Step 6: Final answer
    x = 3,998.02

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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.