Home / 3,720.22-5,580.85-1,255.75

Finding the Fourth Proportional to 3,720.22, 5,580.85 and 1,255.75

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Solution

The fourth proportional to 3,720.22, 5,580.85 and 1,255.75 is: 1,883.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.22 : 5,580.85 = 1,255.75 : x
  2. Step 2: Convert to fraction form
    3,720.22/5,580.85 = 1,255.75/x
  3. Step 3: Cross multiply
    3,720.22x = 5,580.85 × 1,255.75
  4. Step 4: Simplify right side
    3,720.22x = 7,008,152.39
  5. Step 5: Solve for x
    x = 7,008,152.39/3,720.22
  6. Step 6: Final answer
    x = 1,883.80

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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.