Home / 5,231.13-7,845.83-1,721.18

Finding the Fourth Proportional to 5,231.13, 7,845.83 and 1,721.18

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Solution

The fourth proportional to 5,231.13, 7,845.83 and 1,721.18 is: 2,581.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.13 : 7,845.83 = 1,721.18 : x
  2. Step 2: Convert to fraction form
    5,231.13/7,845.83 = 1,721.18/x
  3. Step 3: Cross multiply
    5,231.13x = 7,845.83 × 1,721.18
  4. Step 4: Simplify right side
    5,231.13x = 13,504,109.60
  5. Step 5: Solve for x
    x = 13,504,109.60/5,231.13
  6. Step 6: Final answer
    x = 2,581.49

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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.