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Finding the Fourth Proportional to 3,722.76, 5,580.22 and 1,255.24

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Solution

The fourth proportional to 3,722.76, 5,580.22 and 1,255.24 is: 1,881.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,722.76 : 5,580.22 = 1,255.24 : x
  2. Step 2: Convert to fraction form
    3,722.76/5,580.22 = 1,255.24/x
  3. Step 3: Cross multiply
    3,722.76x = 5,580.22 × 1,255.24
  4. Step 4: Simplify right side
    3,722.76x = 7,004,515.35
  5. Step 5: Solve for x
    x = 7,004,515.35/3,722.76
  6. Step 6: Final answer
    x = 1,881.54

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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.