Home / 2,272.12-3,132.14-1,387.33

Finding the Fourth Proportional to 2,272.12, 3,132.14 and 1,387.33

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Solution

The fourth proportional to 2,272.12, 3,132.14 and 1,387.33 is: 1,912.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.12 : 3,132.14 = 1,387.33 : x
  2. Step 2: Convert to fraction form
    2,272.12/3,132.14 = 1,387.33/x
  3. Step 3: Cross multiply
    2,272.12x = 3,132.14 × 1,387.33
  4. Step 4: Simplify right side
    2,272.12x = 4,345,297.02
  5. Step 5: Solve for x
    x = 4,345,297.02/2,272.12
  6. Step 6: Final answer
    x = 1,912.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.