Home / 3,618.96-5,428.44-2,321.28

Finding the Fourth Proportional to 3,618.96, 5,428.44 and 2,321.28

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Solution

The fourth proportional to 3,618.96, 5,428.44 and 2,321.28 is: 3,481.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.96 : 5,428.44 = 2,321.28 : x
  2. Step 2: Convert to fraction form
    3,618.96/5,428.44 = 2,321.28/x
  3. Step 3: Cross multiply
    3,618.96x = 5,428.44 × 2,321.28
  4. Step 4: Simplify right side
    3,618.96x = 12,600,929.20
  5. Step 5: Solve for x
    x = 12,600,929.20/3,618.96
  6. Step 6: Final answer
    x = 3,481.92

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1.5x scale

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.