Home / 3,885.39-5,361.97-2,117.16

Finding the Fourth Proportional to 3,885.39, 5,361.97 and 2,117.16

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Solution

The fourth proportional to 3,885.39, 5,361.97 and 2,117.16 is: 2,921.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.39 : 5,361.97 = 2,117.16 : x
  2. Step 2: Convert to fraction form
    3,885.39/5,361.97 = 2,117.16/x
  3. Step 3: Cross multiply
    3,885.39x = 5,361.97 × 2,117.16
  4. Step 4: Simplify right side
    3,885.39x = 11,352,148.41
  5. Step 5: Solve for x
    x = 11,352,148.41/3,885.39
  6. Step 6: Final answer
    x = 2,921.75

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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.