Home / 3,178.73-4,386.89-2,000.03

Finding the Fourth Proportional to 3,178.73, 4,386.89 and 2,000.03

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Solution

The fourth proportional to 3,178.73, 4,386.89 and 2,000.03 is: 2,760.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.73 : 4,386.89 = 2,000.03 : x
  2. Step 2: Convert to fraction form
    3,178.73/4,386.89 = 2,000.03/x
  3. Step 3: Cross multiply
    3,178.73x = 4,386.89 × 2,000.03
  4. Step 4: Simplify right side
    3,178.73x = 8,773,912.57
  5. Step 5: Solve for x
    x = 8,773,912.57/3,178.73
  6. Step 6: Final answer
    x = 2,760.19

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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.