Home / 5,486.48-7,571.31-3,128.57

Finding the Fourth Proportional to 5,486.48, 7,571.31 and 3,128.57

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Solution

The fourth proportional to 5,486.48, 7,571.31 and 3,128.57 is: 4,317.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,486.48 : 7,571.31 = 3,128.57 : x
  2. Step 2: Convert to fraction form
    5,486.48/7,571.31 = 3,128.57/x
  3. Step 3: Cross multiply
    5,486.48x = 7,571.31 × 3,128.57
  4. Step 4: Simplify right side
    5,486.48x = 23,687,373.33
  5. Step 5: Solve for x
    x = 23,687,373.33/5,486.48
  6. Step 6: Final answer
    x = 4,317.41

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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.