Home / 5,177.63-7,145.18-2,819.78

Finding the Fourth Proportional to 5,177.63, 7,145.18 and 2,819.78

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Solution

The fourth proportional to 5,177.63, 7,145.18 and 2,819.78 is: 3,891.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.63 : 7,145.18 = 2,819.78 : x
  2. Step 2: Convert to fraction form
    5,177.63/7,145.18 = 2,819.78/x
  3. Step 3: Cross multiply
    5,177.63x = 7,145.18 × 2,819.78
  4. Step 4: Simplify right side
    5,177.63x = 20,147,785.84
  5. Step 5: Solve for x
    x = 20,147,785.84/5,177.63
  6. Step 6: Final answer
    x = 3,891.32

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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.