Home / 1,972.09-2,721.45-1,273.48

Finding the Fourth Proportional to 1,972.09, 2,721.45 and 1,273.48

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Solution

The fourth proportional to 1,972.09, 2,721.45 and 1,273.48 is: 1,757.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.09 : 2,721.45 = 1,273.48 : x
  2. Step 2: Convert to fraction form
    1,972.09/2,721.45 = 1,273.48/x
  3. Step 3: Cross multiply
    1,972.09x = 2,721.45 × 1,273.48
  4. Step 4: Simplify right side
    1,972.09x = 3,465,712.15
  5. Step 5: Solve for x
    x = 3,465,712.15/1,972.09
  6. Step 6: Final answer
    x = 1,757.38

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1.5x scale

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.