Home / 1,486.12-2,231.72-1,239.07

Finding the Fourth Proportional to 1,486.12, 2,231.72 and 1,239.07

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Solution

The fourth proportional to 1,486.12, 2,231.72 and 1,239.07 is: 1,860.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,486.12 : 2,231.72 = 1,239.07 : x
  2. Step 2: Convert to fraction form
    1,486.12/2,231.72 = 1,239.07/x
  3. Step 3: Cross multiply
    1,486.12x = 2,231.72 × 1,239.07
  4. Step 4: Simplify right side
    1,486.12x = 2,765,257.30
  5. Step 5: Solve for x
    x = 2,765,257.30/1,486.12
  6. Step 6: Final answer
    x = 1,860.72

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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.