Home / 2,151.62-2,966.44-1,394.05

Finding the Fourth Proportional to 2,151.62, 2,966.44 and 1,394.05

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Solution

The fourth proportional to 2,151.62, 2,966.44 and 1,394.05 is: 1,921.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.62 : 2,966.44 = 1,394.05 : x
  2. Step 2: Convert to fraction form
    2,151.62/2,966.44 = 1,394.05/x
  3. Step 3: Cross multiply
    2,151.62x = 2,966.44 × 1,394.05
  4. Step 4: Simplify right side
    2,151.62x = 4,135,365.68
  5. Step 5: Solve for x
    x = 4,135,365.68/2,151.62
  6. Step 6: Final answer
    x = 1,921.98

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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.