Home / 6,390.72-9,586.52-2,231.78

Finding the Fourth Proportional to 6,390.72, 9,586.52 and 2,231.78

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Solution

The fourth proportional to 6,390.72, 9,586.52 and 2,231.78 is: 3,347.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.72 : 9,586.52 = 2,231.78 : x
  2. Step 2: Convert to fraction form
    6,390.72/9,586.52 = 2,231.78/x
  3. Step 3: Cross multiply
    6,390.72x = 9,586.52 × 2,231.78
  4. Step 4: Simplify right side
    6,390.72x = 21,394,944.51
  5. Step 5: Solve for x
    x = 21,394,944.51/6,390.72
  6. Step 6: Final answer
    x = 3,347.81

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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.