Home / 3,819.72-5,730.47-1,187.09

Finding the Fourth Proportional to 3,819.72, 5,730.47 and 1,187.09

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Solution

The fourth proportional to 3,819.72, 5,730.47 and 1,187.09 is: 1,780.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.72 : 5,730.47 = 1,187.09 : x
  2. Step 2: Convert to fraction form
    3,819.72/5,730.47 = 1,187.09/x
  3. Step 3: Cross multiply
    3,819.72x = 5,730.47 × 1,187.09
  4. Step 4: Simplify right side
    3,819.72x = 6,802,581.66
  5. Step 5: Solve for x
    x = 6,802,581.66/3,819.72
  6. Step 6: Final answer
    x = 1,780.91

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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.