Home / 2,276.28-3,141.28-1,391.94

Finding the Fourth Proportional to 2,276.28, 3,141.28 and 1,391.94

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Solution

The fourth proportional to 2,276.28, 3,141.28 and 1,391.94 is: 1,920.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,276.28 : 3,141.28 = 1,391.94 : x
  2. Step 2: Convert to fraction form
    2,276.28/3,141.28 = 1,391.94/x
  3. Step 3: Cross multiply
    2,276.28x = 3,141.28 × 1,391.94
  4. Step 4: Simplify right side
    2,276.28x = 4,372,473.28
  5. Step 5: Solve for x
    x = 4,372,473.28/2,276.28
  6. Step 6: Final answer
    x = 1,920.89

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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.