Home / 2,543.31-3,814.97-1,388.79

Finding the Fourth Proportional to 2,543.31, 3,814.97 and 1,388.79

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Solution

The fourth proportional to 2,543.31, 3,814.97 and 1,388.79 is: 2,083.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.31 : 3,814.97 = 1,388.79 : x
  2. Step 2: Convert to fraction form
    2,543.31/3,814.97 = 1,388.79/x
  3. Step 3: Cross multiply
    2,543.31x = 3,814.97 × 1,388.79
  4. Step 4: Simplify right side
    2,543.31x = 5,298,185.24
  5. Step 5: Solve for x
    x = 5,298,185.24/2,543.31
  6. Step 6: Final answer
    x = 2,083.19

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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.