Home / 5,177.56-7,145.16-2,819.70

Finding the Fourth Proportional to 5,177.56, 7,145.16 and 2,819.70

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Solution

The fourth proportional to 5,177.56, 7,145.16 and 2,819.70 is: 3,891.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.56 : 7,145.16 = 2,819.70 : x
  2. Step 2: Convert to fraction form
    5,177.56/7,145.16 = 2,819.70/x
  3. Step 3: Cross multiply
    5,177.56x = 7,145.16 × 2,819.70
  4. Step 4: Simplify right side
    5,177.56x = 20,147,207.65
  5. Step 5: Solve for x
    x = 20,147,207.65/5,177.56
  6. Step 6: Final answer
    x = 3,891.26

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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.