Home / 2,126.81-3,185.35-2,091.17

Finding the Fourth Proportional to 2,126.81, 3,185.35 and 2,091.17

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Solution

The fourth proportional to 2,126.81, 3,185.35 and 2,091.17 is: 3,131.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.81 : 3,185.35 = 2,091.17 : x
  2. Step 2: Convert to fraction form
    2,126.81/3,185.35 = 2,091.17/x
  3. Step 3: Cross multiply
    2,126.81x = 3,185.35 × 2,091.17
  4. Step 4: Simplify right side
    2,126.81x = 6,661,108.36
  5. Step 5: Solve for x
    x = 6,661,108.36/2,126.81
  6. Step 6: Final answer
    x = 3,131.97

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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.