Home / 1,972.62-2,721.27-1,264.11

Finding the Fourth Proportional to 1,972.62, 2,721.27 and 1,264.11

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Solution

The fourth proportional to 1,972.62, 2,721.27 and 1,264.11 is: 1,743.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.62 : 2,721.27 = 1,264.11 : x
  2. Step 2: Convert to fraction form
    1,972.62/2,721.27 = 1,264.11/x
  3. Step 3: Cross multiply
    1,972.62x = 2,721.27 × 1,264.11
  4. Step 4: Simplify right side
    1,972.62x = 3,439,984.62
  5. Step 5: Solve for x
    x = 3,439,984.62/1,972.62
  6. Step 6: Final answer
    x = 1,743.87

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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.