Home / 5,192.90-7,161.68-3,174.78

Finding the Fourth Proportional to 5,192.90, 7,161.68 and 3,174.78

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Solution

The fourth proportional to 5,192.90, 7,161.68 and 3,174.78 is: 4,378.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,192.90 : 7,161.68 = 3,174.78 : x
  2. Step 2: Convert to fraction form
    5,192.90/7,161.68 = 3,174.78/x
  3. Step 3: Cross multiply
    5,192.90x = 7,161.68 × 3,174.78
  4. Step 4: Simplify right side
    5,192.90x = 22,736,758.43
  5. Step 5: Solve for x
    x = 22,736,758.43/5,192.90
  6. Step 6: Final answer
    x = 4,378.43

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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.