Home / 5,165.37-7,128.36-3,177.09

Finding the Fourth Proportional to 5,165.37, 7,128.36 and 3,177.09

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Solution

The fourth proportional to 5,165.37, 7,128.36 and 3,177.09 is: 4,384.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165.37 : 7,128.36 = 3,177.09 : x
  2. Step 2: Convert to fraction form
    5,165.37/7,128.36 = 3,177.09/x
  3. Step 3: Cross multiply
    5,165.37x = 7,128.36 × 3,177.09
  4. Step 4: Simplify right side
    5,165.37x = 22,647,441.27
  5. Step 5: Solve for x
    x = 22,647,441.27/5,165.37
  6. Step 6: Final answer
    x = 4,384.48

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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.