Home / 7,420.26-11,124.56-3,905.66

Finding the Fourth Proportional to 7,420.26, 11,124.56 and 3,905.66

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Solution

The fourth proportional to 7,420.26, 11,124.56 and 3,905.66 is: 5,855.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.26 : 11,124.56 = 3,905.66 : x
  2. Step 2: Convert to fraction form
    7,420.26/11,124.56 = 3,905.66/x
  3. Step 3: Cross multiply
    7,420.26x = 11,124.56 × 3,905.66
  4. Step 4: Simplify right side
    7,420.26x = 43,448,749.01
  5. Step 5: Solve for x
    x = 43,448,749.01/7,420.26
  6. Step 6: Final answer
    x = 5,855.42

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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.