Home / 2,721.06-3,753.71-2,122.47

Finding the Fourth Proportional to 2,721.06, 3,753.71 and 2,122.47

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Solution

The fourth proportional to 2,721.06, 3,753.71 and 2,122.47 is: 2,927.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.06 : 3,753.71 = 2,122.47 : x
  2. Step 2: Convert to fraction form
    2,721.06/3,753.71 = 2,122.47/x
  3. Step 3: Cross multiply
    2,721.06x = 3,753.71 × 2,122.47
  4. Step 4: Simplify right side
    2,721.06x = 7,967,126.25
  5. Step 5: Solve for x
    x = 7,967,126.25/2,721.06
  6. Step 6: Final answer
    x = 2,927.95

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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.