Home / 2,126.94-3,189.99-2,021.46

Finding the Fourth Proportional to 2,126.94, 3,189.99 and 2,021.46

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Solution

The fourth proportional to 2,126.94, 3,189.99 and 2,021.46 is: 3,031.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.94 : 3,189.99 = 2,021.46 : x
  2. Step 2: Convert to fraction form
    2,126.94/3,189.99 = 2,021.46/x
  3. Step 3: Cross multiply
    2,126.94x = 3,189.99 × 2,021.46
  4. Step 4: Simplify right side
    2,126.94x = 6,448,429.25
  5. Step 5: Solve for x
    x = 6,448,429.25/2,126.94
  6. Step 6: Final answer
    x = 3,031.78

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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.