Home / 5,489.26-7,574.46-3,131.56

Finding the Fourth Proportional to 5,489.26, 7,574.46 and 3,131.56

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Solution

The fourth proportional to 5,489.26, 7,574.46 and 3,131.56 is: 4,321.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,489.26 : 7,574.46 = 3,131.56 : x
  2. Step 2: Convert to fraction form
    5,489.26/7,574.46 = 3,131.56/x
  3. Step 3: Cross multiply
    5,489.26x = 7,574.46 × 3,131.56
  4. Step 4: Simplify right side
    5,489.26x = 23,719,875.96
  5. Step 5: Solve for x
    x = 23,719,875.96/5,489.26
  6. Step 6: Final answer
    x = 4,321.14

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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.