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Finding the Fourth Proportional to 3,760.94, 5,188.92 and 2,188.74

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Solution

The fourth proportional to 3,760.94, 5,188.92 and 2,188.74 is: 3,019.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,760.94 : 5,188.92 = 2,188.74 : x
  2. Step 2: Convert to fraction form
    3,760.94/5,188.92 = 2,188.74/x
  3. Step 3: Cross multiply
    3,760.94x = 5,188.92 × 2,188.74
  4. Step 4: Simplify right side
    3,760.94x = 11,357,196.76
  5. Step 5: Solve for x
    x = 11,357,196.76/3,760.94
  6. Step 6: Final answer
    x = 3,019.78

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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.