Home / 3,891.10-5,834.94-1,425.28

Finding the Fourth Proportional to 3,891.10, 5,834.94 and 1,425.28

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Solution

The fourth proportional to 3,891.10, 5,834.94 and 1,425.28 is: 2,137.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.10 : 5,834.94 = 1,425.28 : x
  2. Step 2: Convert to fraction form
    3,891.10/5,834.94 = 1,425.28/x
  3. Step 3: Cross multiply
    3,891.10x = 5,834.94 × 1,425.28
  4. Step 4: Simplify right side
    3,891.10x = 8,316,423.28
  5. Step 5: Solve for x
    x = 8,316,423.28/3,891.10
  6. Step 6: Final answer
    x = 2,137.29

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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.