Home / 2,452.14-3,678.24-720.80

Finding the Fourth Proportional to 2,452.14, 3,678.24 and 720.80

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Solution

The fourth proportional to 2,452.14, 3,678.24 and 720.80 is: 1,081.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,452.14 : 3,678.24 = 720.80 : x
  2. Step 2: Convert to fraction form
    2,452.14/3,678.24 = 720.80/x
  3. Step 3: Cross multiply
    2,452.14x = 3,678.24 × 720.80
  4. Step 4: Simplify right side
    2,452.14x = 2,651,275.39
  5. Step 5: Solve for x
    x = 2,651,275.39/2,452.14
  6. Step 6: Final answer
    x = 1,081.21

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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.