Home / 2,721.08-4,082.21-1,422.20

Finding the Fourth Proportional to 2,721.08, 4,082.21 and 1,422.20

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Solution

The fourth proportional to 2,721.08, 4,082.21 and 1,422.20 is: 2,133.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.08 : 4,082.21 = 1,422.20 : x
  2. Step 2: Convert to fraction form
    2,721.08/4,082.21 = 1,422.20/x
  3. Step 3: Cross multiply
    2,721.08x = 4,082.21 × 1,422.20
  4. Step 4: Simplify right side
    2,721.08x = 5,805,727.49
  5. Step 5: Solve for x
    x = 5,805,727.49/2,721.08
  6. Step 6: Final answer
    x = 2,133.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.