Home / 3,620.16-5,426.64-2,157.12

Finding the Fourth Proportional to 3,620.16, 5,426.64 and 2,157.12

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Solution

The fourth proportional to 3,620.16, 5,426.64 and 2,157.12 is: 3,233.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.16 : 5,426.64 = 2,157.12 : x
  2. Step 2: Convert to fraction form
    3,620.16/5,426.64 = 2,157.12/x
  3. Step 3: Cross multiply
    3,620.16x = 5,426.64 × 2,157.12
  4. Step 4: Simplify right side
    3,620.16x = 11,705,913.68
  5. Step 5: Solve for x
    x = 11,705,913.68/3,620.16
  6. Step 6: Final answer
    x = 3,233.53

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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.