Home / 3,974.40-5,963.36-1,379.20

Finding the Fourth Proportional to 3,974.40, 5,963.36 and 1,379.20

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Solution

The fourth proportional to 3,974.40, 5,963.36 and 1,379.20 is: 2,069.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,974.40 : 5,963.36 = 1,379.20 : x
  2. Step 2: Convert to fraction form
    3,974.40/5,963.36 = 1,379.20/x
  3. Step 3: Cross multiply
    3,974.40x = 5,963.36 × 1,379.20
  4. Step 4: Simplify right side
    3,974.40x = 8,224,666.11
  5. Step 5: Solve for x
    x = 8,224,666.11/3,974.40
  6. Step 6: Final answer
    x = 2,069.41

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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.