Home / 3,759.45-5,188.80-2,187.87

Finding the Fourth Proportional to 3,759.45, 5,188.80 and 2,187.87

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Solution

The fourth proportional to 3,759.45, 5,188.80 and 2,187.87 is: 3,019.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.45 : 5,188.80 = 2,187.87 : x
  2. Step 2: Convert to fraction form
    3,759.45/5,188.80 = 2,187.87/x
  3. Step 3: Cross multiply
    3,759.45x = 5,188.80 × 2,187.87
  4. Step 4: Simplify right side
    3,759.45x = 11,352,419.86
  5. Step 5: Solve for x
    x = 11,352,419.86/3,759.45
  6. Step 6: Final answer
    x = 3,019.70

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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.