Home / 2,071.20-3,106.92-838.58

Finding the Fourth Proportional to 2,071.20, 3,106.92 and 838.58

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Solution

The fourth proportional to 2,071.20, 3,106.92 and 838.58 is: 1,257.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.20 : 3,106.92 = 838.58 : x
  2. Step 2: Convert to fraction form
    2,071.20/3,106.92 = 838.58/x
  3. Step 3: Cross multiply
    2,071.20x = 3,106.92 × 838.58
  4. Step 4: Simplify right side
    2,071.20x = 2,605,400.97
  5. Step 5: Solve for x
    x = 2,605,400.97/2,071.20
  6. Step 6: Final answer
    x = 1,257.92

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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.