Home / 3,760.82-5,187.91-2,188.61

Finding the Fourth Proportional to 3,760.82, 5,187.91 and 2,188.61

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Solution

The fourth proportional to 3,760.82, 5,187.91 and 2,188.61 is: 3,019.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,760.82 : 5,187.91 = 2,188.61 : x
  2. Step 2: Convert to fraction form
    3,760.82/5,187.91 = 2,188.61/x
  3. Step 3: Cross multiply
    3,760.82x = 5,187.91 × 2,188.61
  4. Step 4: Simplify right side
    3,760.82x = 11,354,311.71
  5. Step 5: Solve for x
    x = 11,354,311.71/3,760.82
  6. Step 6: Final answer
    x = 3,019.11

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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.