Home / 2,721.20-3,751.24-2,123.02

Finding the Fourth Proportional to 2,721.20, 3,751.24 and 2,123.02

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Solution

The fourth proportional to 2,721.20, 3,751.24 and 2,123.02 is: 2,926.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.20 : 3,751.24 = 2,123.02 : x
  2. Step 2: Convert to fraction form
    2,721.20/3,751.24 = 2,123.02/x
  3. Step 3: Cross multiply
    2,721.20x = 3,751.24 × 2,123.02
  4. Step 4: Simplify right side
    2,721.20x = 7,963,952.24
  5. Step 5: Solve for x
    x = 7,963,952.24/2,721.20
  6. Step 6: Final answer
    x = 2,926.64

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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.