Home / 3,187.80-4,777.65-1,725.75

Finding the Fourth Proportional to 3,187.80, 4,777.65 and 1,725.75

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Solution

The fourth proportional to 3,187.80, 4,777.65 and 1,725.75 is: 2,586.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.80 : 4,777.65 = 1,725.75 : x
  2. Step 2: Convert to fraction form
    3,187.80/4,777.65 = 1,725.75/x
  3. Step 3: Cross multiply
    3,187.80x = 4,777.65 × 1,725.75
  4. Step 4: Simplify right side
    3,187.80x = 8,245,029.49
  5. Step 5: Solve for x
    x = 8,245,029.49/3,187.80
  6. Step 6: Final answer
    x = 2,586.43

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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.