Home / 3,581.28-5,370.48-3,186.72

Finding the Fourth Proportional to 3,581.28, 5,370.48 and 3,186.72

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Solution

The fourth proportional to 3,581.28, 5,370.48 and 3,186.72 is: 4,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.28 : 5,370.48 = 3,186.72 : x
  2. Step 2: Convert to fraction form
    3,581.28/5,370.48 = 3,186.72/x
  3. Step 3: Cross multiply
    3,581.28x = 5,370.48 × 3,186.72
  4. Step 4: Simplify right side
    3,581.28x = 17,114,216.03
  5. Step 5: Solve for x
    x = 17,114,216.03/3,581.28
  6. Step 6: Final answer
    x = 4,778.80

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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.