Home / 3,761.84-5,190.12-2,189.36

Finding the Fourth Proportional to 3,761.84, 5,190.12 and 2,189.36

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Solution

The fourth proportional to 3,761.84, 5,190.12 and 2,189.36 is: 3,020.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.84 : 5,190.12 = 2,189.36 : x
  2. Step 2: Convert to fraction form
    3,761.84/5,190.12 = 2,189.36/x
  3. Step 3: Cross multiply
    3,761.84x = 5,190.12 × 2,189.36
  4. Step 4: Simplify right side
    3,761.84x = 11,363,041.12
  5. Step 5: Solve for x
    x = 11,363,041.12/3,761.84
  6. Step 6: Final answer
    x = 3,020.61

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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.