Home / 3,074.90-4,240.96-2,131.04

Finding the Fourth Proportional to 3,074.90, 4,240.96 and 2,131.04

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Solution

The fourth proportional to 3,074.90, 4,240.96 and 2,131.04 is: 2,939.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,074.90 : 4,240.96 = 2,131.04 : x
  2. Step 2: Convert to fraction form
    3,074.90/4,240.96 = 2,131.04/x
  3. Step 3: Cross multiply
    3,074.90x = 4,240.96 × 2,131.04
  4. Step 4: Simplify right side
    3,074.90x = 9,037,660.67
  5. Step 5: Solve for x
    x = 9,037,660.67/3,074.90
  6. Step 6: Final answer
    x = 2,939.18

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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.