Home / 2,240.78-3,381.26-2,150.90

Finding the Fourth Proportional to 2,240.78, 3,381.26 and 2,150.90

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Solution

The fourth proportional to 2,240.78, 3,381.26 and 2,150.90 is: 3,245.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.78 : 3,381.26 = 2,150.90 : x
  2. Step 2: Convert to fraction form
    2,240.78/3,381.26 = 2,150.90/x
  3. Step 3: Cross multiply
    2,240.78x = 3,381.26 × 2,150.90
  4. Step 4: Simplify right side
    2,240.78x = 7,272,752.13
  5. Step 5: Solve for x
    x = 7,272,752.13/2,240.78
  6. Step 6: Final answer
    x = 3,245.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.