Home / 3,808.20-5,712.30-1,618.50

Finding the Fourth Proportional to 3,808.20, 5,712.30 and 1,618.50

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Solution

The fourth proportional to 3,808.20, 5,712.30 and 1,618.50 is: 2,427.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.20 : 5,712.30 = 1,618.50 : x
  2. Step 2: Convert to fraction form
    3,808.20/5,712.30 = 1,618.50/x
  3. Step 3: Cross multiply
    3,808.20x = 5,712.30 × 1,618.50
  4. Step 4: Simplify right side
    3,808.20x = 9,245,357.55
  5. Step 5: Solve for x
    x = 9,245,357.55/3,808.20
  6. Step 6: Final answer
    x = 2,427.75

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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.