Home / 1,972.26-2,720.33-1,264.31

Finding the Fourth Proportional to 1,972.26, 2,720.33 and 1,264.31

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Solution

The fourth proportional to 1,972.26, 2,720.33 and 1,264.31 is: 1,743.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.26 : 2,720.33 = 1,264.31 : x
  2. Step 2: Convert to fraction form
    1,972.26/2,720.33 = 1,264.31/x
  3. Step 3: Cross multiply
    1,972.26x = 2,720.33 × 1,264.31
  4. Step 4: Simplify right side
    1,972.26x = 3,439,330.46
  5. Step 5: Solve for x
    x = 3,439,330.46/1,972.26
  6. Step 6: Final answer
    x = 1,743.85

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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.