Home / 3,106.17-4,286.39-1,780.00

Finding the Fourth Proportional to 3,106.17, 4,286.39 and 1,780.00

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Solution

The fourth proportional to 3,106.17, 4,286.39 and 1,780.00 is: 2,456.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.17 : 4,286.39 = 1,780.00 : x
  2. Step 2: Convert to fraction form
    3,106.17/4,286.39 = 1,780.00/x
  3. Step 3: Cross multiply
    3,106.17x = 4,286.39 × 1,780.00
  4. Step 4: Simplify right side
    3,106.17x = 7,629,754.58
  5. Step 5: Solve for x
    x = 7,629,754.58/3,106.17
  6. Step 6: Final answer
    x = 2,456.32

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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.