Home / 5,180.68-7,149.36-2,942.57

Finding the Fourth Proportional to 5,180.68, 7,149.36 and 2,942.57

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Solution

The fourth proportional to 5,180.68, 7,149.36 and 2,942.57 is: 4,060.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.68 : 7,149.36 = 2,942.57 : x
  2. Step 2: Convert to fraction form
    5,180.68/7,149.36 = 2,942.57/x
  3. Step 3: Cross multiply
    5,180.68x = 7,149.36 × 2,942.57
  4. Step 4: Simplify right side
    5,180.68x = 21,037,521.16
  5. Step 5: Solve for x
    x = 21,037,521.16/5,180.68
  6. Step 6: Final answer
    x = 4,060.76

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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.