Home / 3,720.40-5,581.44-1,255.04

Finding the Fourth Proportional to 3,720.40, 5,581.44 and 1,255.04

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Solution

The fourth proportional to 3,720.40, 5,581.44 and 1,255.04 is: 1,882.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.40 : 5,581.44 = 1,255.04 : x
  2. Step 2: Convert to fraction form
    3,720.40/5,581.44 = 1,255.04/x
  3. Step 3: Cross multiply
    3,720.40x = 5,581.44 × 1,255.04
  4. Step 4: Simplify right side
    3,720.40x = 7,004,930.46
  5. Step 5: Solve for x
    x = 7,004,930.46/3,720.40
  6. Step 6: Final answer
    x = 1,882.84

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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.