Home / 2,114.16-3,171.80-727.60

Finding the Fourth Proportional to 2,114.16, 3,171.80 and 727.60

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Solution

The fourth proportional to 2,114.16, 3,171.80 and 727.60 is: 1,091.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.16 : 3,171.80 = 727.60 : x
  2. Step 2: Convert to fraction form
    2,114.16/3,171.80 = 727.60/x
  3. Step 3: Cross multiply
    2,114.16x = 3,171.80 × 727.60
  4. Step 4: Simplify right side
    2,114.16x = 2,307,801.68
  5. Step 5: Solve for x
    x = 2,307,801.68/2,114.16
  6. Step 6: Final answer
    x = 1,091.59

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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.