Home / 2,128.41-3,186.70-1,606.84

Finding the Fourth Proportional to 2,128.41, 3,186.70 and 1,606.84

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Solution

The fourth proportional to 2,128.41, 3,186.70 and 1,606.84 is: 2,405.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.41 : 3,186.70 = 1,606.84 : x
  2. Step 2: Convert to fraction form
    2,128.41/3,186.70 = 1,606.84/x
  3. Step 3: Cross multiply
    2,128.41x = 3,186.70 × 1,606.84
  4. Step 4: Simplify right side
    2,128.41x = 5,120,517.03
  5. Step 5: Solve for x
    x = 5,120,517.03/2,128.41
  6. Step 6: Final answer
    x = 2,405.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.