Home / 3,612.64-5,419.68-1,147.04

Finding the Fourth Proportional to 3,612.64, 5,419.68 and 1,147.04

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Solution

The fourth proportional to 3,612.64, 5,419.68 and 1,147.04 is: 1,720.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.64 : 5,419.68 = 1,147.04 : x
  2. Step 2: Convert to fraction form
    3,612.64/5,419.68 = 1,147.04/x
  3. Step 3: Cross multiply
    3,612.64x = 5,419.68 × 1,147.04
  4. Step 4: Simplify right side
    3,612.64x = 6,216,589.75
  5. Step 5: Solve for x
    x = 6,216,589.75/3,612.64
  6. Step 6: Final answer
    x = 1,720.79

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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.