Home / 5,177.91-7,145.51-2,820.05

Finding the Fourth Proportional to 5,177.91, 7,145.51 and 2,820.05

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Solution

The fourth proportional to 5,177.91, 7,145.51 and 2,820.05 is: 3,891.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.91 : 7,145.51 = 2,820.05 : x
  2. Step 2: Convert to fraction form
    5,177.91/7,145.51 = 2,820.05/x
  3. Step 3: Cross multiply
    5,177.91x = 7,145.51 × 2,820.05
  4. Step 4: Simplify right side
    5,177.91x = 20,150,645.65
  5. Step 5: Solve for x
    x = 20,150,645.65/5,177.91
  6. Step 6: Final answer
    x = 3,891.66

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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.