Home / 3,187.54-4,387.89-2,765.41

Finding the Fourth Proportional to 3,187.54, 4,387.89 and 2,765.41

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Solution

The fourth proportional to 3,187.54, 4,387.89 and 2,765.41 is: 3,806.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.54 : 4,387.89 = 2,765.41 : x
  2. Step 2: Convert to fraction form
    3,187.54/4,387.89 = 2,765.41/x
  3. Step 3: Cross multiply
    3,187.54x = 4,387.89 × 2,765.41
  4. Step 4: Simplify right side
    3,187.54x = 12,134,314.88
  5. Step 5: Solve for x
    x = 12,134,314.88/3,187.54
  6. Step 6: Final answer
    x = 3,806.80

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1.5x scale

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.