Home / 2,187.92-3,280.26-1,322.03

Finding the Fourth Proportional to 2,187.92, 3,280.26 and 1,322.03

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Solution

The fourth proportional to 2,187.92, 3,280.26 and 1,322.03 is: 1,982.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.92 : 3,280.26 = 1,322.03 : x
  2. Step 2: Convert to fraction form
    2,187.92/3,280.26 = 1,322.03/x
  3. Step 3: Cross multiply
    2,187.92x = 3,280.26 × 1,322.03
  4. Step 4: Simplify right side
    2,187.92x = 4,336,602.13
  5. Step 5: Solve for x
    x = 4,336,602.13/2,187.92
  6. Step 6: Final answer
    x = 1,982.07

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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.