Home / 3,761.67-5,190.08-2,189.55

Finding the Fourth Proportional to 3,761.67, 5,190.08 and 2,189.55

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Solution

The fourth proportional to 3,761.67, 5,190.08 and 2,189.55 is: 3,020.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.67 : 5,190.08 = 2,189.55 : x
  2. Step 2: Convert to fraction form
    3,761.67/5,190.08 = 2,189.55/x
  3. Step 3: Cross multiply
    3,761.67x = 5,190.08 × 2,189.55
  4. Step 4: Simplify right side
    3,761.67x = 11,363,928.72
  5. Step 5: Solve for x
    x = 11,363,928.72/3,761.67
  6. Step 6: Final answer
    x = 3,020.98

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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.