Home / 3,072.88-4,609.30-1,428.51

Finding the Fourth Proportional to 3,072.88, 4,609.30 and 1,428.51

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Solution

The fourth proportional to 3,072.88, 4,609.30 and 1,428.51 is: 2,142.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.88 : 4,609.30 = 1,428.51 : x
  2. Step 2: Convert to fraction form
    3,072.88/4,609.30 = 1,428.51/x
  3. Step 3: Cross multiply
    3,072.88x = 4,609.30 × 1,428.51
  4. Step 4: Simplify right side
    3,072.88x = 6,584,424.00
  5. Step 5: Solve for x
    x = 6,584,424.00/3,072.88
  6. Step 6: Final answer
    x = 2,142.75

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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.