Home / 5,131.40-7,078.82-3,242.07

Finding the Fourth Proportional to 5,131.40, 7,078.82 and 3,242.07

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Solution

The fourth proportional to 5,131.40, 7,078.82 and 3,242.07 is: 4,472.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.40 : 7,078.82 = 3,242.07 : x
  2. Step 2: Convert to fraction form
    5,131.40/7,078.82 = 3,242.07/x
  3. Step 3: Cross multiply
    5,131.40x = 7,078.82 × 3,242.07
  4. Step 4: Simplify right side
    5,131.40x = 22,950,013.75
  5. Step 5: Solve for x
    x = 22,950,013.75/5,131.40
  6. Step 6: Final answer
    x = 4,472.47

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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.