Home / 3,878.15-5,351.97-2,199.51

Finding the Fourth Proportional to 3,878.15, 5,351.97 and 2,199.51

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Solution

The fourth proportional to 3,878.15, 5,351.97 and 2,199.51 is: 3,035.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.15 : 5,351.97 = 2,199.51 : x
  2. Step 2: Convert to fraction form
    3,878.15/5,351.97 = 2,199.51/x
  3. Step 3: Cross multiply
    3,878.15x = 5,351.97 × 2,199.51
  4. Step 4: Simplify right side
    3,878.15x = 11,771,711.53
  5. Step 5: Solve for x
    x = 11,771,711.53/3,878.15
  6. Step 6: Final answer
    x = 3,035.39

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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.