Home / 7,430.50-11,131.17-3,721.78

Finding the Fourth Proportional to 7,430.50, 11,131.17 and 3,721.78

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Solution

The fourth proportional to 7,430.50, 11,131.17 and 3,721.78 is: 5,575.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,430.50 : 11,131.17 = 3,721.78 : x
  2. Step 2: Convert to fraction form
    7,430.50/11,131.17 = 3,721.78/x
  3. Step 3: Cross multiply
    7,430.50x = 11,131.17 × 3,721.78
  4. Step 4: Simplify right side
    7,430.50x = 41,427,765.88
  5. Step 5: Solve for x
    x = 41,427,765.88/7,430.50
  6. Step 6: Final answer
    x = 5,575.37

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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.