Home / 3,625.41-5,428.66-1,978.55

Finding the Fourth Proportional to 3,625.41, 5,428.66 and 1,978.55

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Solution

The fourth proportional to 3,625.41, 5,428.66 and 1,978.55 is: 2,962.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,625.41 : 5,428.66 = 1,978.55 : x
  2. Step 2: Convert to fraction form
    3,625.41/5,428.66 = 1,978.55/x
  3. Step 3: Cross multiply
    3,625.41x = 5,428.66 × 1,978.55
  4. Step 4: Simplify right side
    3,625.41x = 10,740,883.87
  5. Step 5: Solve for x
    x = 10,740,883.87/3,625.41
  6. Step 6: Final answer
    x = 2,962.67

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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.