Home / 5,170.43-7,131.57-3,178.37

Finding the Fourth Proportional to 5,170.43, 7,131.57 and 3,178.37

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Solution

The fourth proportional to 5,170.43, 7,131.57 and 3,178.37 is: 4,383.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.43 : 7,131.57 = 3,178.37 : x
  2. Step 2: Convert to fraction form
    5,170.43/7,131.57 = 3,178.37/x
  3. Step 3: Cross multiply
    5,170.43x = 7,131.57 × 3,178.37
  4. Step 4: Simplify right side
    5,170.43x = 22,666,768.14
  5. Step 5: Solve for x
    x = 22,666,768.14/5,170.43
  6. Step 6: Final answer
    x = 4,383.92

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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.