Home / 3,991.72-5,506.03-2,647.33

Finding the Fourth Proportional to 3,991.72, 5,506.03 and 2,647.33

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Solution

The fourth proportional to 3,991.72, 5,506.03 and 2,647.33 is: 3,651.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.72 : 5,506.03 = 2,647.33 : x
  2. Step 2: Convert to fraction form
    3,991.72/5,506.03 = 2,647.33/x
  3. Step 3: Cross multiply
    3,991.72x = 5,506.03 × 2,647.33
  4. Step 4: Simplify right side
    3,991.72x = 14,576,278.40
  5. Step 5: Solve for x
    x = 14,576,278.40/3,991.72
  6. Step 6: Final answer
    x = 3,651.63

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1.5x scale

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.