Home / 3,186.30-4,780.62-1,239.84

Finding the Fourth Proportional to 3,186.30, 4,780.62 and 1,239.84

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Solution

The fourth proportional to 3,186.30, 4,780.62 and 1,239.84 is: 1,860.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.30 : 4,780.62 = 1,239.84 : x
  2. Step 2: Convert to fraction form
    3,186.30/4,780.62 = 1,239.84/x
  3. Step 3: Cross multiply
    3,186.30x = 4,780.62 × 1,239.84
  4. Step 4: Simplify right side
    3,186.30x = 5,927,203.90
  5. Step 5: Solve for x
    x = 5,927,203.90/3,186.30
  6. Step 6: Final answer
    x = 1,860.22

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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.