Home / 3,885.38-5,361.84-2,117.10

Finding the Fourth Proportional to 3,885.38, 5,361.84 and 2,117.10

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Solution

The fourth proportional to 3,885.38, 5,361.84 and 2,117.10 is: 2,921.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.38 : 5,361.84 = 2,117.10 : x
  2. Step 2: Convert to fraction form
    3,885.38/5,361.84 = 2,117.10/x
  3. Step 3: Cross multiply
    3,885.38x = 5,361.84 × 2,117.10
  4. Step 4: Simplify right side
    3,885.38x = 11,351,551.46
  5. Step 5: Solve for x
    x = 11,351,551.46/3,885.38
  6. Step 6: Final answer
    x = 2,921.61

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Double scale
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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.