Home / 2,452.13-3,678.19-720.75

Finding the Fourth Proportional to 2,452.13, 3,678.19 and 720.75

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Solution

The fourth proportional to 2,452.13, 3,678.19 and 720.75 is: 1,081.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,452.13 : 3,678.19 = 720.75 : x
  2. Step 2: Convert to fraction form
    2,452.13/3,678.19 = 720.75/x
  3. Step 3: Cross multiply
    2,452.13x = 3,678.19 × 720.75
  4. Step 4: Simplify right side
    2,452.13x = 2,651,055.44
  5. Step 5: Solve for x
    x = 2,651,055.44/2,452.13
  6. Step 6: Final answer
    x = 1,081.13

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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.