Home / 3,914.70-5,872.56-1,281.30

Finding the Fourth Proportional to 3,914.70, 5,872.56 and 1,281.30

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Solution

The fourth proportional to 3,914.70, 5,872.56 and 1,281.30 is: 1,922.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.70 : 5,872.56 = 1,281.30 : x
  2. Step 2: Convert to fraction form
    3,914.70/5,872.56 = 1,281.30/x
  3. Step 3: Cross multiply
    3,914.70x = 5,872.56 × 1,281.30
  4. Step 4: Simplify right side
    3,914.70x = 7,524,511.13
  5. Step 5: Solve for x
    x = 7,524,511.13/3,914.70
  6. Step 6: Final answer
    x = 1,922.12

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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.