Home / 4,765.72-7,148.22-1,991.38

Finding the Fourth Proportional to 4,765.72, 7,148.22 and 1,991.38

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Solution

The fourth proportional to 4,765.72, 7,148.22 and 1,991.38 is: 2,986.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,765.72 : 7,148.22 = 1,991.38 : x
  2. Step 2: Convert to fraction form
    4,765.72/7,148.22 = 1,991.38/x
  3. Step 3: Cross multiply
    4,765.72x = 7,148.22 × 1,991.38
  4. Step 4: Simplify right side
    4,765.72x = 14,234,822.34
  5. Step 5: Solve for x
    x = 14,234,822.34/4,765.72
  6. Step 6: Final answer
    x = 2,986.92

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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.