Home / 3,878.28-5,352.14-2,199.64

Finding the Fourth Proportional to 3,878.28, 5,352.14 and 2,199.64

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Solution

The fourth proportional to 3,878.28, 5,352.14 and 2,199.64 is: 3,035.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.28 : 5,352.14 = 2,199.64 : x
  2. Step 2: Convert to fraction form
    3,878.28/5,352.14 = 2,199.64/x
  3. Step 3: Cross multiply
    3,878.28x = 5,352.14 × 2,199.64
  4. Step 4: Simplify right side
    3,878.28x = 11,772,781.23
  5. Step 5: Solve for x
    x = 11,772,781.23/3,878.28
  6. Step 6: Final answer
    x = 3,035.57

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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.