Home / 1,972.92-2,721.48-1,274.30

Finding the Fourth Proportional to 1,972.92, 2,721.48 and 1,274.30

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Solution

The fourth proportional to 1,972.92, 2,721.48 and 1,274.30 is: 1,757.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.92 : 2,721.48 = 1,274.30 : x
  2. Step 2: Convert to fraction form
    1,972.92/2,721.48 = 1,274.30/x
  3. Step 3: Cross multiply
    1,972.92x = 2,721.48 × 1,274.30
  4. Step 4: Simplify right side
    1,972.92x = 3,467,981.96
  5. Step 5: Solve for x
    x = 3,467,981.96/1,972.92
  6. Step 6: Final answer
    x = 1,757.79

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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.