Home / 5,210.38-7,815.33-2,091.79

Finding the Fourth Proportional to 5,210.38, 7,815.33 and 2,091.79

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Solution

The fourth proportional to 5,210.38, 7,815.33 and 2,091.79 is: 3,137.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,210.38 : 7,815.33 = 2,091.79 : x
  2. Step 2: Convert to fraction form
    5,210.38/7,815.33 = 2,091.79/x
  3. Step 3: Cross multiply
    5,210.38x = 7,815.33 × 2,091.79
  4. Step 4: Simplify right side
    5,210.38x = 16,348,029.14
  5. Step 5: Solve for x
    x = 16,348,029.14/5,210.38
  6. Step 6: Final answer
    x = 3,137.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.