Home / 2,217.05-3,325.23-1,328.08

Finding the Fourth Proportional to 2,217.05, 3,325.23 and 1,328.08

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Solution

The fourth proportional to 2,217.05, 3,325.23 and 1,328.08 is: 1,991.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.05 : 3,325.23 = 1,328.08 : x
  2. Step 2: Convert to fraction form
    2,217.05/3,325.23 = 1,328.08/x
  3. Step 3: Cross multiply
    2,217.05x = 3,325.23 × 1,328.08
  4. Step 4: Simplify right side
    2,217.05x = 4,416,151.62
  5. Step 5: Solve for x
    x = 4,416,151.62/2,217.05
  6. Step 6: Final answer
    x = 1,991.90

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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.