Home / 2,121.97-2,927.93-1,271.24

Finding the Fourth Proportional to 2,121.97, 2,927.93 and 1,271.24

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Solution

The fourth proportional to 2,121.97, 2,927.93 and 1,271.24 is: 1,754.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.97 : 2,927.93 = 1,271.24 : x
  2. Step 2: Convert to fraction form
    2,121.97/2,927.93 = 1,271.24/x
  3. Step 3: Cross multiply
    2,121.97x = 2,927.93 × 1,271.24
  4. Step 4: Simplify right side
    2,121.97x = 3,722,101.73
  5. Step 5: Solve for x
    x = 3,722,101.73/2,121.97
  6. Step 6: Final answer
    x = 1,754.08

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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.