Home / 2,131.34-3,195.21-1,020.13

Finding the Fourth Proportional to 2,131.34, 3,195.21 and 1,020.13

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Solution

The fourth proportional to 2,131.34, 3,195.21 and 1,020.13 is: 1,529.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.34 : 3,195.21 = 1,020.13 : x
  2. Step 2: Convert to fraction form
    2,131.34/3,195.21 = 1,020.13/x
  3. Step 3: Cross multiply
    2,131.34x = 3,195.21 × 1,020.13
  4. Step 4: Simplify right side
    2,131.34x = 3,259,529.58
  5. Step 5: Solve for x
    x = 3,259,529.58/2,131.34
  6. Step 6: Final answer
    x = 1,529.33

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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.