Home / 2,182.26-3,272.63-721.02

Finding the Fourth Proportional to 2,182.26, 3,272.63 and 721.02

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Solution

The fourth proportional to 2,182.26, 3,272.63 and 721.02 is: 1,081.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,182.26 : 3,272.63 = 721.02 : x
  2. Step 2: Convert to fraction form
    2,182.26/3,272.63 = 721.02/x
  3. Step 3: Cross multiply
    2,182.26x = 3,272.63 × 721.02
  4. Step 4: Simplify right side
    2,182.26x = 2,359,628.08
  5. Step 5: Solve for x
    x = 2,359,628.08/2,182.26
  6. Step 6: Final answer
    x = 1,081.28

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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.