Home / 2,408.20-3,612.38-764.71

Finding the Fourth Proportional to 2,408.20, 3,612.38 and 764.71

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Solution

The fourth proportional to 2,408.20, 3,612.38 and 764.71 is: 1,147.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,408.20 : 3,612.38 = 764.71 : x
  2. Step 2: Convert to fraction form
    2,408.20/3,612.38 = 764.71/x
  3. Step 3: Cross multiply
    2,408.20x = 3,612.38 × 764.71
  4. Step 4: Simplify right side
    2,408.20x = 2,762,410.26
  5. Step 5: Solve for x
    x = 2,762,410.26/2,408.20
  6. Step 6: Final answer
    x = 1,147.09

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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.