Home / 3,815.20-5,692.36-3,261.28

Finding the Fourth Proportional to 3,815.20, 5,692.36 and 3,261.28

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Solution

The fourth proportional to 3,815.20, 5,692.36 and 3,261.28 is: 4,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.20 : 5,692.36 = 3,261.28 : x
  2. Step 2: Convert to fraction form
    3,815.20/5,692.36 = 3,261.28/x
  3. Step 3: Cross multiply
    3,815.20x = 5,692.36 × 3,261.28
  4. Step 4: Simplify right side
    3,815.20x = 18,564,379.82
  5. Step 5: Solve for x
    x = 18,564,379.82/3,815.20
  6. Step 6: Final answer
    x = 4,865.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.