Home / 3,877.66-5,351.05-2,109.22

Finding the Fourth Proportional to 3,877.66, 5,351.05 and 2,109.22

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Solution

The fourth proportional to 3,877.66, 5,351.05 and 2,109.22 is: 2,910.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.66 : 5,351.05 = 2,109.22 : x
  2. Step 2: Convert to fraction form
    3,877.66/5,351.05 = 2,109.22/x
  3. Step 3: Cross multiply
    3,877.66x = 5,351.05 × 2,109.22
  4. Step 4: Simplify right side
    3,877.66x = 11,286,541.68
  5. Step 5: Solve for x
    x = 11,286,541.68/3,877.66
  6. Step 6: Final answer
    x = 2,910.66

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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.