Home / 3,187.54-4,398.67-1,861.37

Finding the Fourth Proportional to 3,187.54, 4,398.67 and 1,861.37

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Solution

The fourth proportional to 3,187.54, 4,398.67 and 1,861.37 is: 2,568.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.54 : 4,398.67 = 1,861.37 : x
  2. Step 2: Convert to fraction form
    3,187.54/4,398.67 = 1,861.37/x
  3. Step 3: Cross multiply
    3,187.54x = 4,398.67 × 1,861.37
  4. Step 4: Simplify right side
    3,187.54x = 8,187,552.38
  5. Step 5: Solve for x
    x = 8,187,552.38/3,187.54
  6. Step 6: Final answer
    x = 2,568.61

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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.