Home / 2,187.57-3,282.57-1,781.76

Finding the Fourth Proportional to 2,187.57, 3,282.57 and 1,781.76

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Solution

The fourth proportional to 2,187.57, 3,282.57 and 1,781.76 is: 2,673.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.57 : 3,282.57 = 1,781.76 : x
  2. Step 2: Convert to fraction form
    2,187.57/3,282.57 = 1,781.76/x
  3. Step 3: Cross multiply
    2,187.57x = 3,282.57 × 1,781.76
  4. Step 4: Simplify right side
    2,187.57x = 5,848,751.92
  5. Step 5: Solve for x
    x = 5,848,751.92/2,187.57
  6. Step 6: Final answer
    x = 2,673.63

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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.