Home / 3,872.15-5,806.45-1,239.14

Finding the Fourth Proportional to 3,872.15, 5,806.45 and 1,239.14

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Solution

The fourth proportional to 3,872.15, 5,806.45 and 1,239.14 is: 1,858.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872.15 : 5,806.45 = 1,239.14 : x
  2. Step 2: Convert to fraction form
    3,872.15/5,806.45 = 1,239.14/x
  3. Step 3: Cross multiply
    3,872.15x = 5,806.45 × 1,239.14
  4. Step 4: Simplify right side
    3,872.15x = 7,195,020.52
  5. Step 5: Solve for x
    x = 7,195,020.52/3,872.15
  6. Step 6: Final answer
    x = 1,858.15

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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.