Home / 2,855.30-4,272.82-1,681.88

Finding the Fourth Proportional to 2,855.30, 4,272.82 and 1,681.88

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Solution

The fourth proportional to 2,855.30, 4,272.82 and 1,681.88 is: 2,516.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.30 : 4,272.82 = 1,681.88 : x
  2. Step 2: Convert to fraction form
    2,855.30/4,272.82 = 1,681.88/x
  3. Step 3: Cross multiply
    2,855.30x = 4,272.82 × 1,681.88
  4. Step 4: Simplify right side
    2,855.30x = 7,186,340.73
  5. Step 5: Solve for x
    x = 7,186,340.73/2,855.30
  6. Step 6: Final answer
    x = 2,516.85

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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.