Home / 3,788.15-5,687.46-2,615.40

Finding the Fourth Proportional to 3,788.15, 5,687.46 and 2,615.40

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Solution

The fourth proportional to 3,788.15, 5,687.46 and 2,615.40 is: 3,926.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,788.15 : 5,687.46 = 2,615.40 : x
  2. Step 2: Convert to fraction form
    3,788.15/5,687.46 = 2,615.40/x
  3. Step 3: Cross multiply
    3,788.15x = 5,687.46 × 2,615.40
  4. Step 4: Simplify right side
    3,788.15x = 14,874,982.88
  5. Step 5: Solve for x
    x = 14,874,982.88/3,788.15
  6. Step 6: Final answer
    x = 3,926.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.