Home / 3,819-5,731.06-1,387

Finding the Fourth Proportional to 3,819, 5,731.06 and 1,387

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Solution

The fourth proportional to 3,819, 5,731.06 and 1,387 is: 2,081.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819 : 5,731.06 = 1,387 : x
  2. Step 2: Convert to fraction form
    3,819/5,731.06 = 1,387/x
  3. Step 3: Cross multiply
    3,819x = 5,731.06 × 1,387
  4. Step 4: Simplify right side
    3,819x = 7,948,980.22
  5. Step 5: Solve for x
    x = 7,948,980.22/3,819
  6. Step 6: Final answer
    x = 2,081.43

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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.