Home / 3,915.94-5,403.21-2,237.90

Finding the Fourth Proportional to 3,915.94, 5,403.21 and 2,237.90

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Solution

The fourth proportional to 3,915.94, 5,403.21 and 2,237.90 is: 3,087.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.94 : 5,403.21 = 2,237.90 : x
  2. Step 2: Convert to fraction form
    3,915.94/5,403.21 = 2,237.90/x
  3. Step 3: Cross multiply
    3,915.94x = 5,403.21 × 2,237.90
  4. Step 4: Simplify right side
    3,915.94x = 12,091,835.75
  5. Step 5: Solve for x
    x = 12,091,835.75/3,915.94
  6. Step 6: Final answer
    x = 3,087.85

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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.