Home / 2,452.20-3,678.36-720.81

Finding the Fourth Proportional to 2,452.20, 3,678.36 and 720.81

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Solution

The fourth proportional to 2,452.20, 3,678.36 and 720.81 is: 1,081.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,452.20 : 3,678.36 = 720.81 : x
  2. Step 2: Convert to fraction form
    2,452.20/3,678.36 = 720.81/x
  3. Step 3: Cross multiply
    2,452.20x = 3,678.36 × 720.81
  4. Step 4: Simplify right side
    2,452.20x = 2,651,398.67
  5. Step 5: Solve for x
    x = 2,651,398.67/2,452.20
  6. Step 6: Final answer
    x = 1,081.23

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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.