Home / 2,986.91-4,481.27-1,207.05

Finding the Fourth Proportional to 2,986.91, 4,481.27 and 1,207.05

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Solution

The fourth proportional to 2,986.91, 4,481.27 and 1,207.05 is: 1,810.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.91 : 4,481.27 = 1,207.05 : x
  2. Step 2: Convert to fraction form
    2,986.91/4,481.27 = 1,207.05/x
  3. Step 3: Cross multiply
    2,986.91x = 4,481.27 × 1,207.05
  4. Step 4: Simplify right side
    2,986.91x = 5,409,116.95
  5. Step 5: Solve for x
    x = 5,409,116.95/2,986.91
  6. Step 6: Final answer
    x = 1,810.94

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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.