Home / 2,721.28-3,747.36-2,021.44

Finding the Fourth Proportional to 2,721.28, 3,747.36 and 2,021.44

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Solution

The fourth proportional to 2,721.28, 3,747.36 and 2,021.44 is: 2,783.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.28 : 3,747.36 = 2,021.44 : x
  2. Step 2: Convert to fraction form
    2,721.28/3,747.36 = 2,021.44/x
  3. Step 3: Cross multiply
    2,721.28x = 3,747.36 × 2,021.44
  4. Step 4: Simplify right side
    2,721.28x = 7,575,063.40
  5. Step 5: Solve for x
    x = 7,575,063.40/2,721.28
  6. Step 6: Final answer
    x = 2,783.64

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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.