Home / 3,187.89-4,399.52-1,790.64

Finding the Fourth Proportional to 3,187.89, 4,399.52 and 1,790.64

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Solution

The fourth proportional to 3,187.89, 4,399.52 and 1,790.64 is: 2,471.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.89 : 4,399.52 = 1,790.64 : x
  2. Step 2: Convert to fraction form
    3,187.89/4,399.52 = 1,790.64/x
  3. Step 3: Cross multiply
    3,187.89x = 4,399.52 × 1,790.64
  4. Step 4: Simplify right side
    3,187.89x = 7,877,947.54
  5. Step 5: Solve for x
    x = 7,877,947.54/3,187.89
  6. Step 6: Final answer
    x = 2,471.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.