Home / 3,691.20-5,528.70-3,205.20

Finding the Fourth Proportional to 3,691.20, 5,528.70 and 3,205.20

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Solution

The fourth proportional to 3,691.20, 5,528.70 and 3,205.20 is: 4,800.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.20 : 5,528.70 = 3,205.20 : x
  2. Step 2: Convert to fraction form
    3,691.20/5,528.70 = 3,205.20/x
  3. Step 3: Cross multiply
    3,691.20x = 5,528.70 × 3,205.20
  4. Step 4: Simplify right side
    3,691.20x = 17,720,589.24
  5. Step 5: Solve for x
    x = 17,720,589.24/3,691.20
  6. Step 6: Final answer
    x = 4,800.77

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1.5x scale

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.