Home / 2,072.12-3,108.98-1,251

Finding the Fourth Proportional to 2,072.12, 3,108.98 and 1,251

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Solution

The fourth proportional to 2,072.12, 3,108.98 and 1,251 is: 1,876.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.12 : 3,108.98 = 1,251 : x
  2. Step 2: Convert to fraction form
    2,072.12/3,108.98 = 1,251/x
  3. Step 3: Cross multiply
    2,072.12x = 3,108.98 × 1,251
  4. Step 4: Simplify right side
    2,072.12x = 3,889,333.98
  5. Step 5: Solve for x
    x = 3,889,333.98/2,072.12
  6. Step 6: Final answer
    x = 1,876.98

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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.