Home / 2,657.76-3,982.08-1,425.75

Finding the Fourth Proportional to 2,657.76, 3,982.08 and 1,425.75

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Solution

The fourth proportional to 2,657.76, 3,982.08 and 1,425.75 is: 2,136.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.76 : 3,982.08 = 1,425.75 : x
  2. Step 2: Convert to fraction form
    2,657.76/3,982.08 = 1,425.75/x
  3. Step 3: Cross multiply
    2,657.76x = 3,982.08 × 1,425.75
  4. Step 4: Simplify right side
    2,657.76x = 5,677,450.56
  5. Step 5: Solve for x
    x = 5,677,450.56/2,657.76
  6. Step 6: Final answer
    x = 2,136.18

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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.