Home / 3,620.62-5,428.95-1,671.09

Finding the Fourth Proportional to 3,620.62, 5,428.95 and 1,671.09

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Solution

The fourth proportional to 3,620.62, 5,428.95 and 1,671.09 is: 2,505.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.62 : 5,428.95 = 1,671.09 : x
  2. Step 2: Convert to fraction form
    3,620.62/5,428.95 = 1,671.09/x
  3. Step 3: Cross multiply
    3,620.62x = 5,428.95 × 1,671.09
  4. Step 4: Simplify right side
    3,620.62x = 9,072,264.06
  5. Step 5: Solve for x
    x = 9,072,264.06/3,620.62
  6. Step 6: Final answer
    x = 2,505.72

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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.