Home / 2,780.40-4,176.12-2,682

Finding the Fourth Proportional to 2,780.40, 4,176.12 and 2,682

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Solution

The fourth proportional to 2,780.40, 4,176.12 and 2,682 is: 4,028.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.40 : 4,176.12 = 2,682 : x
  2. Step 2: Convert to fraction form
    2,780.40/4,176.12 = 2,682/x
  3. Step 3: Cross multiply
    2,780.40x = 4,176.12 × 2,682
  4. Step 4: Simplify right side
    2,780.40x = 11,200,353.84
  5. Step 5: Solve for x
    x = 11,200,353.84/2,780.40
  6. Step 6: Final answer
    x = 4,028.32

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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.