Home / 3,072.28-4,239.70-1,675

Finding the Fourth Proportional to 3,072.28, 4,239.70 and 1,675

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Solution

The fourth proportional to 3,072.28, 4,239.70 and 1,675 is: 2,311.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.28 : 4,239.70 = 1,675 : x
  2. Step 2: Convert to fraction form
    3,072.28/4,239.70 = 1,675/x
  3. Step 3: Cross multiply
    3,072.28x = 4,239.70 × 1,675
  4. Step 4: Simplify right side
    3,072.28x = 7,101,497.50
  5. Step 5: Solve for x
    x = 7,101,497.50/3,072.28
  6. Step 6: Final answer
    x = 2,311.47

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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.