Home / 2,231.85-3,079.80-1,237.08

Finding the Fourth Proportional to 2,231.85, 3,079.80 and 1,237.08

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Solution

The fourth proportional to 2,231.85, 3,079.80 and 1,237.08 is: 1,707.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.85 : 3,079.80 = 1,237.08 : x
  2. Step 2: Convert to fraction form
    2,231.85/3,079.80 = 1,237.08/x
  3. Step 3: Cross multiply
    2,231.85x = 3,079.80 × 1,237.08
  4. Step 4: Simplify right side
    2,231.85x = 3,809,958.98
  5. Step 5: Solve for x
    x = 3,809,958.98/2,231.85
  6. Step 6: Final answer
    x = 1,707.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.