Home / 3,877.99-5,351.63-2,109.58

Finding the Fourth Proportional to 3,877.99, 5,351.63 and 2,109.58

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Solution

The fourth proportional to 3,877.99, 5,351.63 and 2,109.58 is: 2,911.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.99 : 5,351.63 = 2,109.58 : x
  2. Step 2: Convert to fraction form
    3,877.99/5,351.63 = 2,109.58/x
  3. Step 3: Cross multiply
    3,877.99x = 5,351.63 × 2,109.58
  4. Step 4: Simplify right side
    3,877.99x = 11,289,691.62
  5. Step 5: Solve for x
    x = 11,289,691.62/3,877.99
  6. Step 6: Final answer
    x = 2,911.22

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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.