Home / 5,177.64-7,145.15-2,819.79

Finding the Fourth Proportional to 5,177.64, 7,145.15 and 2,819.79

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Solution

The fourth proportional to 5,177.64, 7,145.15 and 2,819.79 is: 3,891.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.64 : 7,145.15 = 2,819.79 : x
  2. Step 2: Convert to fraction form
    5,177.64/7,145.15 = 2,819.79/x
  3. Step 3: Cross multiply
    5,177.64x = 7,145.15 × 2,819.79
  4. Step 4: Simplify right side
    5,177.64x = 20,147,772.69
  5. Step 5: Solve for x
    x = 20,147,772.69/5,177.64
  6. Step 6: Final answer
    x = 3,891.31

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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.