Home / 2,141.28-2,954.48-1,209.44

Finding the Fourth Proportional to 2,141.28, 2,954.48 and 1,209.44

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Solution

The fourth proportional to 2,141.28, 2,954.48 and 1,209.44 is: 1,668.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,141.28 : 2,954.48 = 1,209.44 : x
  2. Step 2: Convert to fraction form
    2,141.28/2,954.48 = 1,209.44/x
  3. Step 3: Cross multiply
    2,141.28x = 2,954.48 × 1,209.44
  4. Step 4: Simplify right side
    2,141.28x = 3,573,266.29
  5. Step 5: Solve for x
    x = 3,573,266.29/2,141.28
  6. Step 6: Final answer
    x = 1,668.75

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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.