Home / 3,625.72-5,428.82-1,890.68

Finding the Fourth Proportional to 3,625.72, 5,428.82 and 1,890.68

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Solution

The fourth proportional to 3,625.72, 5,428.82 and 1,890.68 is: 2,830.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,625.72 : 5,428.82 = 1,890.68 : x
  2. Step 2: Convert to fraction form
    3,625.72/5,428.82 = 1,890.68/x
  3. Step 3: Cross multiply
    3,625.72x = 5,428.82 × 1,890.68
  4. Step 4: Simplify right side
    3,625.72x = 10,264,161.40
  5. Step 5: Solve for x
    x = 10,264,161.40/3,625.72
  6. Step 6: Final answer
    x = 2,830.93

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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.