Home / 3,920.74-5,410.21-2,242.09

Finding the Fourth Proportional to 3,920.74, 5,410.21 and 2,242.09

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Solution

The fourth proportional to 3,920.74, 5,410.21 and 2,242.09 is: 3,093.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.74 : 5,410.21 = 2,242.09 : x
  2. Step 2: Convert to fraction form
    3,920.74/5,410.21 = 2,242.09/x
  3. Step 3: Cross multiply
    3,920.74x = 5,410.21 × 2,242.09
  4. Step 4: Simplify right side
    3,920.74x = 12,130,177.74
  5. Step 5: Solve for x
    x = 12,130,177.74/3,920.74
  6. Step 6: Final answer
    x = 3,093.85

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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.